diff --git a/gradle.properties b/gradle.properties
index f7a6fe0..dcafdc8 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -10,7 +10,7 @@ VERSION = 1.4.0-SNAPSHOT
 USE_DELTA = false
 VERSION_DELTA =
 
-CODENAME = guanggu
+CODENAME = pocheng
 
 # dependencies
 
diff --git a/src/main/scala/cc/sukazyo/cono/morny/bot/query/ShareToolBilibili.scala b/src/main/scala/cc/sukazyo/cono/morny/bot/query/ShareToolBilibili.scala
index e2a6bed..6c9e497 100644
--- a/src/main/scala/cc/sukazyo/cono/morny/bot/query/ShareToolBilibili.scala
+++ b/src/main/scala/cc/sukazyo/cono/morny/bot/query/ShareToolBilibili.scala
@@ -14,8 +14,8 @@ class ShareToolBilibili (using coeur: MornyCoeur) extends ITelegramQuery {
 	private val TITLE_BILI_BV = "[bilibili] Share video / BV"
 	private val ID_PREFIX_BILI_AV = "[morny/share/bili/av]"
 	private val ID_PREFIX_BILI_BV = "[morny/share/bili/bv]"
-	private val LINK_PREFIX = "https://bilibili.com/video/"
 	private val SHARE_FORMAT_HTML = "<a href='%s'>%s</a>"
+	private def formatShareHTML (url: String, name: String): String = SHARE_FORMAT_HTML.format(url, name)
 	
 	override def query (event: Update): List[InlineQueryUnit[_]] | Null = {
 		
@@ -31,27 +31,20 @@ class ShareToolBilibili (using coeur: MornyCoeur) extends ITelegramQuery {
 					parse_videoUrl(destructB23Url(event.inlineQuery.query))
 				catch
 					case _: IllegalArgumentException =>
-						return null;
+						return null
 					case e: IllegalStateException =>
 						logger error exceptionLog(e)
 						coeur.daemons.reporter.exception(e)
-						return null;
+						return null
 		
-		val av = result.av
-		val bv = result.bv
-		val id_av = s"av$av"
-		val id_bv = s"BV$bv"
-		val linkParams = if (result.part != null) s"?p=${result.part}" else ""
-		val link_av = LINK_PREFIX + id_av + linkParams
-		val link_bv = LINK_PREFIX + id_bv + linkParams
 		List(
 			InlineQueryUnit(InlineQueryResultArticle(
-				inlineQueryId(ID_PREFIX_BILI_AV + av), TITLE_BILI_AV + av,
-				InputTextMessageContent(SHARE_FORMAT_HTML.format(link_av, id_av)).parseMode(ParseMode HTML)
+				inlineQueryId(ID_PREFIX_BILI_AV + result.av), TITLE_BILI_AV + result.av,
+				InputTextMessageContent(formatShareHTML(result.avLink, result.toAvString)).parseMode(ParseMode HTML)
 			)),
 			InlineQueryUnit(InlineQueryResultArticle(
-				inlineQueryId(ID_PREFIX_BILI_BV + bv), TITLE_BILI_BV + bv,
-				InputTextMessageContent(SHARE_FORMAT_HTML.format(link_bv, id_bv)).parseMode(ParseMode HTML)
+				inlineQueryId(ID_PREFIX_BILI_BV + result.bv), TITLE_BILI_BV + result.bv,
+				InputTextMessageContent(formatShareHTML(result.bvLink, result.toBvString)).parseMode(ParseMode HTML)
 			))
 		)
 		
diff --git a/src/main/scala/cc/sukazyo/cono/morny/extra/BilibiliForms.scala b/src/main/scala/cc/sukazyo/cono/morny/extra/BilibiliForms.scala
index a44246a..e17e734 100644
--- a/src/main/scala/cc/sukazyo/cono/morny/extra/BilibiliForms.scala
+++ b/src/main/scala/cc/sukazyo/cono/morny/extra/BilibiliForms.scala
@@ -11,7 +11,23 @@ import scala.util.matching.Regex
 
 object BilibiliForms {
 	
-	case class BiliVideoId (av: Long, bv: String, part: Int|Null = null)
+	case class BiliVideoId (av: Long, bv: String, part: Int|Null = null):
+		def withPart (part: Int|Null): BiliVideoId = BiliVideoId(av, bv, part)
+		def link (useFormat: BiliVideoId.Formats = BiliVideoId.Formats.AV): String =
+			val useId: String = useFormat match
+				case BiliVideoId.Formats.AV => avLink
+				case BiliVideoId.Formats.BV => bvLink
+			s"https://www.bilibili.com/video/$useId" +
+				(if part == null then "" else s"?p=$part")
+		def avLink: String = link(BiliVideoId.Formats.AV)
+		def bvLink: String = link(BiliVideoId.Formats.BV)
+		def toAvString: String = s"av$av"
+		def toBvString: String = s"BV$bv"
+	object BiliVideoId:
+		enum Formats:
+			case AV, BV
+		def fromAv (av: Long): BiliVideoId = BiliVideoId(av, BiliTool.toBv(av))
+		def fromBv (bv: String): BiliVideoId = BiliVideoId(BiliTool.toAv(bv), bv)
 	
 	private val REGEX_BILI_ID = "^((?:av|AV)(\\d{1,16})|(?:bv1|BV1)([A-HJ-NP-Za-km-z1-9]{9}))$"r
 	private val REGEX_BILI_V_PART_IN_URL_PARAM = "(?:&|^)p=(\\d+)"r
@@ -36,23 +52,23 @@ object BilibiliForms {
 				val av = select(_url_av, _raw_av)
 				val bv = "1" + select(_url_bv, _raw_bv)
 				
-				val part_part = if (_url_param == null) null else
+				val part_part = if _url_param == null then null else
 					REGEX_BILI_V_PART_IN_URL_PARAM.findFirstMatchIn(_url_param) match
 						case Some(part) => part.group(1)
 						case None => null
-				val part: Int | Null = if (part_part != null) part_part toInt else null
+				val part: Int | Null = if part_part != null then part_part toInt else null
 				
 				if (av == null) {
 					assert(bv != null)
-					BiliVideoId(BiliTool.toAv(bv), bv, part)
+					BiliVideoId fromBv bv withPart part
 				} else {
 					val _av = av.toLong
-					BiliVideoId(_av, BiliTool.toBv(_av), part)
+					BiliVideoId fromAv _av withPart part
 				}
 				
 			case _ => throw IllegalArgumentException(s"not a valid Bilibili video link: $url")
 	
-	private val httpClient = OkHttpSyncBackend()
+	private lazy val httpClient = OkHttpSyncBackend()
 	
 	/** get the bilibili video url from b23.tv share url.
 	  *