两个平台怎么对打简介：Taoist Cen explained that in the past, herb collectors would tie a red string around the elixir that was not old enough. When the elixir was mature, they would come back to pick it.
Taoist Cen explained that in the past, herb collectors would tie a red string around the elixir that was not old enough. When the elixir was mature, they would come back to pick it.
