diff --git a/.github/workflows/gradle.yml b/.github/workflows/gradle.yml
index 7d2a6cb..8bf1867 100644
--- a/.github/workflows/gradle.yml
+++ b/.github/workflows/gradle.yml
@@ -2,9 +2,9 @@ name: Explode Build Test
 
 on:
   push:
-    branches: [ "master" ]
+    branches: [ "v3" ]
   pull_request:
-    branches: [ "master" ]
+    branches: [ "v3" ]
 
 permissions:
   contents: read
@@ -15,18 +15,18 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up JDK 11
-      uses: actions/setup-java@v3
+      uses: actions/setup-java@v4
       with:
         java-version: '11'
         distribution: 'temurin'
+    - name: Setup Gradle
+      uses: gradle/actions/setup-gradle@v6
     - name: Build with Gradle
-      uses: gradle/gradle-build-action@v2
-      with:
-        arguments: build -x test
+      run: ./gradlew build -x test
     - name: Upload Artifacts
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: Explode
         path: |
diff --git a/DEV_README.md b/DEV_README.md
index e454391..73a06fa 100644
--- a/DEV_README.md
+++ b/DEV_README.md
@@ -14,3 +14,14 @@
 
 ### 数据提供 Labyrinth 
 
+## Artifacts
+
+The final JARs you can get from this project are:
+
+- explode-all-(version).jar
+- explode-all-(version)-all.jar
+- explode-proxy-(version).jar
+- explode-proxy-(version)-all.jar
+
+For server deploying, use explode-all-(version)-all.jar, and run it with
+ `java -cp explode-all-(version)-ALL.jar explode2.booster.BoosterMainKt`
diff --git a/README.md b/README.md
index 1b70f9e..78948ce 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,8 @@ Or join our [Discord](https://discord.gg/BS5UZnsvVZ) server for English support.
 There is no well-documented code nor a helpful documentation to set up and use, so you need to figure it out by yourself
 or simply contact the contributors for help.
 
+Maybe you can refer to DEV_README.md?
+
 ### Env Vars
 
 *DB_URL*: The connection string to the database.
\ No newline at end of file
diff --git a/booster/src/main/kotlin/explode2/booster/MainLogics.kt b/booster/src/main/kotlin/explode2/booster/MainLogics.kt
index 6adc8ec..9470328 100644
--- a/booster/src/main/kotlin/explode2/booster/MainLogics.kt
+++ b/booster/src/main/kotlin/explode2/booster/MainLogics.kt
@@ -31,7 +31,7 @@ object MainLogics : KoinComponent {
 		// output Maze provider info
 		gqlLogger.info("Using Maze: ${Colors.TianYi}${MazeProvider.getProvider().javaClass.canonicalName}")
 
-		val welcome = listOf("❄", "❤", "\uD83D\uDCE2", "\uD83D\uDCE3")
+		val welcome = listOf("❄", "❤", "\uD83D\uDCE2", "\uD83D\uDCE3", "氦")
 		val playground = Application::class.java.classLoader.getResource("graphql-playground/index.html")?.readText()
 			?.replace(
 				"\$BACKEND_URL\$",
diff --git a/booster/src/main/kotlin/explode2/booster/graphql/BasicMaze.kt b/booster/src/main/kotlin/explode2/booster/graphql/BasicMaze.kt
index 7de26fe..c6e4e7b 100644
--- a/booster/src/main/kotlin/explode2/booster/graphql/BasicMaze.kt
+++ b/booster/src/main/kotlin/explode2/booster/graphql/BasicMaze.kt
@@ -219,6 +219,7 @@ object BasicMaze : ExplodeQuery, ExplodeMutation, MazeProvider {
 
 		val u = env.getUser()
 
+		// category mapping
 		val cate = when {
 			isHidden == 1 -> SearchCategory.HIDDEN
 			isOfficial == 1 -> SearchCategory.OFFICIAL
@@ -226,12 +227,17 @@ object BasicMaze : ExplodeQuery, ExplodeMutation, MazeProvider {
 			isRanked == -1 -> SearchCategory.UNRANKED
 			else -> SearchCategory.ALL
 		}
+
+		// sort type mapping
+		// see ExplodeX/labyrinth/src/main/kotlin/explode2/labyrinth/SearchEnums.kt for details
 		val sort = when {
 			playCountOrder == -1 -> SearchSort.DESCENDING_BY_PLAY_COUNT
 			publishTimeOrder == -1 -> SearchSort.DESCENDING_BY_PUBLISH_TIME
+			publishTimeOrder == 1 -> SearchSort.ASCENDING_BY_PUBLISH_TIME
 			else -> boom("invalid ordering")
 		}
 
+		// return result
 		return songRepo.searchSongSets(
 			musicTitle,
 			cate,
diff --git a/booster/src/main/kotlin/explode2/booster/graphql/RefreshingRankingList.kt b/booster/src/main/kotlin/explode2/booster/graphql/RefreshingRankingList.kt
index f62b16a..af6592e 100644
--- a/booster/src/main/kotlin/explode2/booster/graphql/RefreshingRankingList.kt
+++ b/booster/src/main/kotlin/explode2/booster/graphql/RefreshingRankingList.kt
@@ -26,11 +26,12 @@ data class RefreshingRankingList(
 		lastUpdateTime = LocalDateTime.now()
 	}
 
+	// fix hardcoded 24 hours refreshing
 	fun get(): List<PlayRecordWithRankModel> {
 		val lastUpdateTime = lastUpdateTime
 		if(
 			lastUpdateTime == null ||
-			lastUpdateTime + 24.hours.toJavaDuration() <= LocalDateTime.now() ||
+			lastUpdateTime + expireHours.hours.toJavaDuration() <= LocalDateTime.now() ||
 			cache == null
 		) {
 			update()
@@ -45,11 +46,12 @@ data class RefreshingRankingList(
 		return get().drop(skip).take(limit)
 	}
 
+	// fix hardcoded 24 hours refreshing
 	fun get(playerId: String): PlayRecordWithRankModel? {
 		val lastUpdateTime = lastUpdateTime
 		if(
 			lastUpdateTime == null ||
-			lastUpdateTime + 24.hours.toJavaDuration() <= LocalDateTime.now() ||
+			lastUpdateTime + expireHours.hours.toJavaDuration() <= LocalDateTime.now() ||
 			cache == null
 		) {
 			update()
diff --git a/booster/src/main/kotlin/goodbird/GoodBirdOracle.kt b/booster/src/main/kotlin/goodbird/GoodBirdOracle.kt
index 2cbd8fd..47bf9e0 100644
--- a/booster/src/main/kotlin/goodbird/GoodBirdOracle.kt
+++ b/booster/src/main/kotlin/goodbird/GoodBirdOracle.kt
@@ -6,6 +6,7 @@ import kotlin.math.pow
  * 来自某位 `一般路过鸟` 的神谕。
  *
  * 我们只需要铭记这位好鸟，不必知晓他的真实身份。如果你知道，也请你保密。
+ * i.e. the R calculation logic
  */
 object GoodBirdOracle {
 
diff --git a/explode-all/build.gradle.kts b/explode-all/build.gradle.kts
index c08fd4e..f0930bb 100644
--- a/explode-all/build.gradle.kts
+++ b/explode-all/build.gradle.kts
@@ -4,8 +4,9 @@ plugins {
     id("com.github.johnrengelman.shadow") version "7.1.2"
 }
 
+// It's explode v3 now
 group = "explode"
-version = "1.0"
+version = "3.0.3"
 
 repositories {
     mavenCentral()
diff --git a/explode-proxy/build.gradle.kts b/explode-proxy/build.gradle.kts
index 45bbf5c..c69fd46 100644
--- a/explode-proxy/build.gradle.kts
+++ b/explode-proxy/build.gradle.kts
@@ -5,7 +5,7 @@ plugins {
 }
 
 group = "explode"
-version = "1.0"
+version = "3.0.3"
 
 repositories {
     mavenCentral()
diff --git a/gateau/src/main/kotlin/explode2/gateau/SongState.kt b/gateau/src/main/kotlin/explode2/gateau/SongState.kt
index a33bc55..24d199b 100644
--- a/gateau/src/main/kotlin/explode2/gateau/SongState.kt
+++ b/gateau/src/main/kotlin/explode2/gateau/SongState.kt
@@ -2,6 +2,7 @@
 
 package explode2.gateau
 
+/* The interface of how we parse the set entries of the database. */
 interface SongState {
 
 	var category: Int
diff --git a/labyrinth-mongodb/src/main/kotlin/explode2/labyrinth/mongo/LabyrinthMongo.kt b/labyrinth-mongodb/src/main/kotlin/explode2/labyrinth/mongo/LabyrinthMongo.kt
index 7593ef2..3d3e245 100644
--- a/labyrinth-mongodb/src/main/kotlin/explode2/labyrinth/mongo/LabyrinthMongo.kt
+++ b/labyrinth-mongodb/src/main/kotlin/explode2/labyrinth/mongo/LabyrinthMongo.kt
@@ -244,10 +244,15 @@ class MongoManager(private val provider: LabyrinthMongoBuilder = LabyrinthMongoB
 
 		// 排序顺序
 		when(sortBy) {
-			null, SearchSort.DESCENDING_BY_PUBLISH_TIME -> {
+			null, 
+			// Descending by time
+			SearchSort.DESCENDING_BY_PUBLISH_TIME -> {
 				pipeline += sort(descending(MongoSongSet::publishTime, MongoSongSet::musicName, MongoSongSet::id))
 			}
-
+			// Ascending by time (Updated 2026.6.2)
+			SearchSort.ASCENDING_BY_PUBLISH_TIME -> {
+        		pipeline += sort(ascending(MongoSongSet::publishTime, MongoSongSet::musicName, MongoSongSet::id))
+    		}
 			// FIXME: 修复性能问题
 			SearchSort.DESCENDING_BY_PLAY_COUNT -> {
 				// 添加游玩次数查询
diff --git a/labyrinth/src/main/kotlin/explode2/labyrinth/SearchEnums.kt b/labyrinth/src/main/kotlin/explode2/labyrinth/SearchEnums.kt
index ebe1c0d..ab05f83 100644
--- a/labyrinth/src/main/kotlin/explode2/labyrinth/SearchEnums.kt
+++ b/labyrinth/src/main/kotlin/explode2/labyrinth/SearchEnums.kt
@@ -4,7 +4,9 @@ enum class SearchCategory {
 	HIDDEN, OFFICIAL, RANKED, UNRANKED, REVIEW, ALL
 }
 
+// Update 2026.6.2: added ASCENDING_BY_PUBLISH_TIME 
 enum class SearchSort {
 	DESCENDING_BY_PLAY_COUNT,
-	DESCENDING_BY_PUBLISH_TIME
+	DESCENDING_BY_PUBLISH_TIME,
+	ASCENDING_BY_PUBLISH_TIME
 }
\ No newline at end of file
diff --git a/settings.gradle.kts b/settings.gradle.kts
index 0321d48..e9087a7 100644
--- a/settings.gradle.kts
+++ b/settings.gradle.kts
@@ -5,7 +5,7 @@ include("labyrinth")
 include("labyrinth-mongodb")
 include("booster")
 include("resource")
-include("booster-maintain")
+// includePlugin("maintain")  // useless
 include("gatekeeper")
 include("explode-all")
 include("explode-proxy")
diff --git a/src/main/kotlin/explode2/tests/Main.kt b/src/main/kotlin/explode2/tests/Main.kt
index 313e11f..d4992ab 100644
--- a/src/main/kotlin/explode2/tests/Main.kt
+++ b/src/main/kotlin/explode2/tests/Main.kt
@@ -28,7 +28,7 @@ fun main(skip: Int = 0, limit: Int = 9) {
 
 	val matchingName = ""
 	val matchingCategory = SearchCategory.ALL
-	val sortBy = SearchSort.DESCENDING_BY_PUBLISH_TIME
+	val sortBy = SearchSort.ASCENDING_BY_PUBLISH_TIME
 
 	class SongSetWithCharts(val charts: List<MongoSongChart>)
 	class SongSetWithPlayCount(val playCount: Int)
@@ -176,6 +176,10 @@ fun main(skip: Int = 0, limit: Int = 9) {
 			pipeline += sort(descending(MongoSongSet::publishTime, MongoSongSet::musicName, MongoSongSet::id))
 		}
 
+		SearchSort.ASCENDING_BY_PUBLISH_TIME -> {
+			pipeline += sort(ascending(MongoSongSet::publishTime, MongoSongSet::musicName, MongoSongSet::id))
+		}
+
 		// FIXME: 修复性能问题
 		SearchSort.DESCENDING_BY_PLAY_COUNT -> {
 			// 添加游玩次数查询