diff --git a/character/refresh.js b/character/refresh.js
index 84de5c643..2998b3e37 100755
--- a/character/refresh.js
+++ b/character/refresh.js
@@ -2538,6 +2538,9 @@ game.import('character',function(lib,game,ui,get,ai,_status){
 					targets[event.num].chooseBool("是否押杀？").ai=function(event,player){
 						var evt=_status.event.getParent();
 						if(get.attitude(targets[event.num],evt.player)>0) return evt.player.countCards('h','sha')?false:true;
+						if(evt.player.hasKnownCards(targets[event.num],c=>{return c.name == 'sha';})){
+							return true;
+						}
 						return Math.random()<0.5;
 					};
 					"step 2"
diff --git a/character/yijiang.js b/character/yijiang.js
index 8b589aee2..d135fe7f5 100755
--- a/character/yijiang.js
+++ b/character/yijiang.js
@@ -466,8 +466,13 @@ game.import('character',function(lib,game,ui,get,ai,_status){
 						return _status.event.choice;
 					}).set('choice',function(){
 						var num=trigger.player.countCards('h',card=>get.type2(card)==type);
+						var knownNum = trigger.player.countKnownCards(_status.event.player,card=>get.type2(card)==type);
+						if(trigger.player.isAllCardsKnown(_status.event.player)){
+							return knownNum;
+						}
+						var restNum = num - knownNum;
 						var numx;
-						if(type=='basic') numx=num+(Math.random()<0.2?(Math.random()>0.5?1:-1):0);
+						if(type=='basic') numx=num+Math.floor(Math.random()*restNum+1);
 						else if(type=='trick'){
 							if(num>2) numx=2;
 							else numx=1;
@@ -478,7 +483,7 @@ game.import('character',function(lib,game,ui,get,ai,_status){
 						else{
 							numx=[0,1].randomGet();
 						}
-						if(numx<0) numx=0;
+						if(numx<knownNum) numx=knownNum;
 						else if(numx>=choices.length) numx=choices.length-1;
 						return numx;
 					}());
diff --git a/game/game.js b/game/game.js
index 51cc74daa..326fd076c 100644
--- a/game/game.js
+++ b/game/game.js
@@ -19317,9 +19317,15 @@
 					for(var num=0;num<cards.length;num++){
 						sort=lib.config.sort_card(cards[num]);
 						if(lib.config.reverse_sort) sort=-sort;
+						if(['o','d'].contains(get.position(cards[num],true))){
+							cards[num].addKnower('everyone');
+						}
 						cards[num].fix();
 						cards[num].style.transform='';
 						cards[num].addGaintag(event.gaintag);
+						if(event.knowers){
+							cards[num].addKnower(event.knowers);//添加事件设定的知情者。
+						}
 						if(_status.discarded){
 							_status.discarded.remove(cards[num]);
 						}
@@ -21016,6 +21022,10 @@
 						return card.isKnownBy(other) && filter(card);
 					}) > 0;
 				}
+				//数此角色被知道的牌。
+				countKnownCards(other,filter){
+					return this.getKnownCards(other,filter).length;
+				}
 				//Execute the delay card effect
 				//执行延时锦囊牌效果
 				executeDelayCardEffect(card,target,judge,judge2){
@@ -30591,6 +30601,21 @@
 						}
 					}
 				}
+				removeKnower(player){
+					if(!this._knowers){
+						return;
+					}
+					if(typeof player == 'string'){
+						this._knowers.remove(player);
+					}else{
+						let type = get.itemtype(player);
+						if(type == 'player'){
+							this._knowers.remove(player.playerid);
+						}else if(type == 'players'){
+							player.forEach(p=>this._knowers.remove(p.playerid));
+						}
+					}
+				}
 				//清除此牌的知情者。
 				clearKnowers(){
 					if(this._knowers)delete this._knowers;
@@ -35843,6 +35868,7 @@
 			for(let i=0;i<ui.discardPile.childNodes.length;i++){
 				var currentcard=ui.discardPile.childNodes[i];
 				currentcard.vanishtag.length=0;
+				currentcard.clearKnowers();
 				if(get.info(currentcard).vanish||currentcard.storage.vanish){
 					currentcard.remove();
 					continue;