算出下期首尾和值方法简介：Li Dao's consciousness sensed that a stream of fire floated out from the depths of the hall. An old man with white beard and hair was wrapped in a layer of flames and looked at him with an angry face.
Li Dao's consciousness sensed that a stream of fire floated out from the depths of the hall. An old man with white beard and hair was wrapped in a layer of flames and looked at him with an angry face.
