Mandatory line placement tutorial

core/assets/bundles/bundle_zh_CN.properties

@@ -21,15 +21,12 @@ stat.destroyed = Buildings Destroyed:[accent] {0}
 stat.deconstructed = Buildings Deconstructed:[accent] {0}
 stat.delivered = Resources Launched:
 stat.rank = Final Rank: [accent]{0}
+placeline = You have selected a block.\nYou can[accent] place in a line[] by[accent] holding down your finger for a few seconds[] and dragging in a direction.\nTry it.
+removearea = You have selected removal mode.\nYou can[accent] remove blocks in a rectangle[] by[accent] holding down your finger for a few seconds[] and dragging.\nTry it.
 map.delete = 确定要删除 "[accent]{0}[]" 地图吗？
 level.highscore = 最高分： [accent]{0}
 level.select = 选择关卡
 level.mode = 游戏模式：
-construction.desktop = 桌面控制已更改.\n取消选择快活停止构建, [accent]使用空间[].
-construction.title = 方块建造指导
-construction = 你选择了 [accent]建造模式[].\n\n点击你附近的有效位置以放置\n选择了方块以后, 点击复选框就会开始建造。\n\n- [accent]移除方块-[] 点击想要删除的方块。\n- [accent]直线放置方块-[] 按住一个空点然后拖到目的地。\n- [accent]取消建造或选择-[] 按左下角的X。
-deconstruction.title = 方块删除指导
-deconstruction = 你选择了 [accent]删除模式[]。\n\n点击你附近的有效位置以删除\n选择了方块以后，点击复选框就会开始删除。\n\n- [accent]移除方块-[] 点击想要删除的方块。\n- [accent]移除选中部分-[] 按住并拖动以选中一个区域。\n- [accent]取消删除或选择-[] 按左下角的X.
 showagain = 不再显示
 coreattack = < 核心正在受到攻击！ >
 nearpoint = [[ [scarlet]LEAVE DROP POINT IMMEDIATELY[] ]\nannihilation imminent
@@ -571,6 +568,7 @@ block.sandrocks.name = Sand Rocks
 block.spore-pine.name = Spore Pine
 block.sporerocks.name = Spore Rocks
 block.rock.name = Rock
+block.snowrock.name = Snow Rock
 block.shale.name = Shale
 block.shale-boulder.name = Shale Boulder
 block.moss.name = Moss