Soft pity: Starts at pull 66. Each pull after that adds +5% to the 6-Star rate.
Hard pity: Guaranteed 6-Star at pull 80 (subject to 50/50).
50/50 system: Each 6-Star has a 50% chance to be the featured character. There is no guaranteed featured after losing.
120-pull guarantee: After 120 pulls without getting the featured character, the next 6-Star is guaranteed to be featured. This counter does NOT carry over between banners.
5-Star guarantee: At least one 5-Star (or higher) every 10 pulls. This carries over between banners.