大师l/u改为n/h(两个旧模式文件为看录像保留)

n难度新增500~1000，使用新bgm:secret8th remix
h难度降低时间门槛

parts/language/lang_zh.lua

@@ -751,8 +751,8 @@ return{
 		['round_h']=			{"回合制",		"困难",		"下棋模式"},
 		['round_l']=			{"回合制",		"疯狂",		"下棋模式"},
 		['round_u']=			{"回合制",		"极限",		"下棋模式"},
-		['master_l']=			{"大师",		"疯狂",		"20G初心者练习"},
-		['master_u']=			{"大师",		"极限",		"上级者20G挑战"},
+		['master_n']=			{"大师",		"普通",		"20G初心者练习"},
+		['master_h']=			{"大师",		"困难",		"上级者20G挑战"},
 		['master_final']=		{"大师",		"终点",		"究极20G:无法触及的终点"},
 		['master_ph']=			{"大师",		"虚幻",		"虚幻20G:???"},
 		['master_ex']=			{"宗师",		"EX",		"成为方块大师"},
@@ -806,10 +806,15 @@ return{
 		['ultra']=				{"限时打分",	"挑战",		"在两分钟内尽可能拿到最多的分数"},
 		['infinite']=			{"无尽",		"",			"沙盒"},
 		['infinite_dig']=		{"无尽:挖掘",	"",			"挖呀挖呀挖"},
+
 		['sprintFix']=			{"竞速",		"无移动"},
 		['sprintLock']=			{"竞速",		"无旋转"},
 		['sprintSmooth']=		{"竞速",		"无摩擦"},
 		['marathon_bfmax']=		{"马拉松",		"极限"},
+
+		['master_l']=			{"大师",		"疯狂"},
+		['master_u']=			{"大师",		"极限"},
+
 		['custom_clear']=		{"自定义",		"普通"},
 		['custom_puzzle']=		{"自定义",		"拼图"},
 	},