HP represents the drifter's ability to take damage. When exploring a dungeon or starting a PVP battle on the arena, each drifter will have a complete HP value. The upper limit of each drifter's HP = 15 * CON + 3 * STR + 3 * AGI + 3 * INT + 3 * VIT + HP bonus provided by the equipment. When the drifter takes damage, the HP will reduce. When the HP is reduced to 0, the drifter will withdraw from the battle. After the end of a dungeon or PVP battle, the drifter will restore all health.