Anti-qing: Start with a Piece of Stone!

As far as historical literature is concerned, it is relatively rare for the Shunjun to start in the late Ming Dynasty. The author gave the protagonist a buff from the reincarnation of Lu Bu, but it was still very difficult to resist the Qing Dynasty. The reason is that the internal fighting consumes strength, which can be regarded as restoring history. But the protagonist started too late, not much has changed, and many tragedies have already happened. As of the latest plot, I really can't imagine how the protagonist can fight. King Chuang is gone, Nanming and Nanjing are destroyed, history is still repeating itself, and the protagonist can only live in Chongqing, and he has to stay with Zhang Xianzhong and the remnants of the Ming army. They say they are fighting the Qing together, but people are not united and cannot even unite. I feel that there is no possibility of cooperation with these insects. When the Ming army was useless and defeated the main force of King Daxi, why not directly attack Chengdu with the power of victory, kill Zhang Xianzhong, and integrate all the forces of Shu to resist the Qing Dynasty. The protagonist chose to maintain peace with the Western army and the Ming army to fight against the Qing Dynasty. Can Zhang Xianzhong and Nan Ming be counted on to cooperate?