The Chinese word "clean sheet" refers to the result or outcome after a match, game, or competition. In sports performance, this term can refer to different things depending on the context and the specific sport involved.

In general, a clean sheet is a victory for one team over another. This means that both teams played their best and achieved a goal equal to or better than expected. The victor then goes home with the ball and starts preparing for the next game.

Sports performance can also be described as having a high level of fitness and physical conditioning. A clean sheet indicates that the athletes were able to perform at their highest levels, which is essential for achieving good results in sports.

However, it's important to note that there are many factors that can contribute to a clean sheet, such as injuries, fatigue, and mental fatigue. It's also possible that the team had a poor mindset going into the game, resulting in poor performance.

Regardless of the cause, a clean sheet is still a positive result, and it should be celebrated by the players and the coaching staff. It's also important to acknowledge the hard work and dedication of the team members who made it happen.

Overall, a clean sheet is a positive result in sports performance that should be celebrated and recognized. However, it's important to recognize that it's not always possible to achieve a perfect performance, especially in high-pressure situations like those that often occur during a match or competition.