The Three Kingdoms Are All My Father-In-Law, How Should We Fight This Battle?

(No system, and I will draw some manual maps) After traveling through the Three Kingdoms, Wei Da reached Wei Zhongdao. When he opened his eyes, he saw the most talented woman of the Eastern Han Dynasty lying on his bed. As the Juan King, Wei Da naturally did not want to lie down and work all his life, and he died suddenly in the end, and he did not want to work for those princes. Even if there was no system, he was still going to use his identity to start a business in the late Eastern Han Dynasty, but as he continued to create, the taste changed. Facing his father-in-law among the enemy's thousands of troops, Wei Da didn't know how to fight for a moment! Cao Cao is the father-in-law. Liu Bei is also his father-in-law. Sun Jian is also the father-in-law. Yuan Shao is also his father-in-law. Even the pseudo-emperor Yuan Shu was his father-in-law. Liu Zhang took Wei Da's hand and said, "Xian son-in-law, look at that big-eared thief who stole my Yizhou. How about we join forces and beat him?" Yuan Shu took Wei Da's little hand and said, "My dear son-in-law, as long as I proclaim myself emperor, you will be the general." Cao Cao took Wei Da's little hand and said, "Wonderful son-in-law, we have a daughter in Jiangdong, why don't we attack Jiangdong together?" Liu Bei took Wei Da's little hand and said, "My dear son-in-law, don't listen to them. Leave the emperor to me, my father-in-law, and let's help the Han Dynasty together!"