Li cheng yin is the fifth son of the central plains kingdom. Li cheng yin grew up with the love of his stepmother, educated strictly by his stepmother so that later he could become a good crown prince and take over the kingdom. Li cheng yin has a calm personality, thinks carefully, and makes precise plans. Li cheng yin was initially only a child with a good personality, but the coldness of the palace and the title of crown prince made him ambitious and would try his best to get the title