Drifting Star Cluster and Dark Nebula

Wednesday's Drifting Star Cluster (Fig. 1) Deployed two hidden bond teams: Changban Myth: Zhang Fei, Zhao Yun, Liu Shan Shuijing's Companions: Pang Tong, Xu Shu, Xiang Lang Friday's Drifting Star Cluster (Fig. 2) One hidden bond team: Chibi Inferno: Zhou Yu, Huang Gai, Cheng Pu Drifting Star Cluster appears on Wednesdays and Fridays. Deploying troops for eight hours yields a large amount of military rations. Dark Nebula (Fig. 3) Alliance BOSS. The alliance leader can choose the difficulty. Troop types are currently unknown. There are theoretically 3*3*3=27 possible combinations. I tried 3-4 times and got it wrong each time. Defeating it rewards Exploration Scroll fragments, and if there are enough players, Summoning Scroll fragments as well. If the alliance leaders announce their formations, you can deploy troops accordingly and win easily (Fig. 4). Calculate the combat power bonus and aim for a perfect tie to win.