This is "Let‘s go, play badminton!" The upgrade version of mainly updates the following items:
1. With the improved high-speed physical system, the flight and rebound of badminton are more close to reality and delicacy, completely eliminating the bug of accidental ball passing through the net.
2. With the addition of robot opponents, AI robot opponents have the learning ability. In the master competition, through the training of antagonizing neural network (all players train the same network), AI opponent's ability will be continuously strengthened.
3. There are two modes of combat: leisure training and competition. The leisure training mode is always served by robot.
4. Support sitting, standing and room level three ways, AI opponent will adjust the passing position according to the setting.
5. Two world rankings have been added: rank ranking and fat burning ranking. To more than 12000 players to get ranking!
6. The calculation formula of calories has been updated, and the fuel fat count is more accurate.
7. This is a magnificent training hall.
8. The judging module is updated. When judging the score, the reasons for judging are given.
9. Add support for English, simplified Chinese and traditional Chinese.

The four competition levels are:
Primary: both sitting and standing, mainly for leisure and entertainment, familiar with the rules of the game, the maximum speed of the opponent is 2 meters per second, and the probability of error is 10%
Intermediate: standing posture, emphasizing physical fitness, sensitivity, accuracy training, opponent's maximum speed of 4 meters per second, error probability of 1%
Senior : standing posture, completely real competition, maximum speed of opponents 5 meters per second, error probability 0.1%
Master: at any level, the opponent will continue to grow stronger with the match against the AI players trained by the network. Maximum speed 5m / s, error probability: 0.01% ~ 100%