Hero upgrade path:
1. Heroes can gain experience by leading a team to defeat wild monsters. Multiple heroes participating in the battle at the same time will gain the same experience value.
2. Participate in the season and gain experience by using under-leveled heroes to occupy tiles.
3. For hero experience props obtained through daily participation in activities, click the hero level icon on the hero details interface to use the hero experience props, which can also increase the hero's level.