Who is He Laosi in the movie "Going to the East"?

Is the sworn brother of the protagonist Zhu Kaishan.

He Laosi took the gold distribution map of the gold mining area and told Zhu Kaishan. Later, He Laosi was killed, and Zhu Kaishan vowed to avenge him at his grave.

Extended data:

Zhu Kaishan is the most important figure in the TV series Go East, a legendary civilian hero and a "rebellious businessman". He was a national hero in the boxer movement in the late Qing Dynasty.

Zhu Kaishan is a legendary civilian hero and a "rebellious businessman". He was a national hero in the boxer movement in the late Qing Dynasty. After the Boxer Rebellion failed, Zhu Kaishan set foot on the road to Kanto, started from scratch with his wife and children in the vast and desolate land, and finally became a wealthy businessman in Harbin's heavy industry. In his legendary life, many virtues such as benevolence, righteousness, wisdom, courage and faithfulness shone on him.