In the game, the upper limit of the martial soul fusion level was 100. Martial Soul Fusion required players to collect different martial souls and fuse them together to obtain a higher-level martial soul. The fusion process required a large amount of materials and experience points, and the level of the spirit would gradually increase according to the number of times the fusion was completed and the success rate. The highest-level martial soul could allow players to obtain powerful skills and equipment to increase their combat strength.