Sister says it means zero card, and no means zero card, which is the mantra often used by skinhead Daniel Wu, a fitness blogger of Tik Tok. Because bloggers are fitness bloggers, they need to control their diet, but they don't want to eat only unhealthy foods such as fitness meals, so they invented a way to deceive themselves by looking at the heat meters compiled on various foods. If there is no heat meter, it is a zero card, so the sister says it is a zero card.

Vocabulary source:

Because bloggers often eat all kinds of chicken legs and hamburgers, which are not labeled with calories and energy, and these foods are high in calories, in order to eat these things with a clear conscience, bloggers will symbolically check the calorie list of food in the video. If there is no calorie meter, then there is no calorie, and the default is zero calorie.

Many users like this blogger very much because of his funny video style. In a series of food videos, they created various interesting routines, such as deceiving themselves that crispy meat is chicken breast, sweet drinks are pure with brown sugar, and eating with the left hand means eating with the left hand (the left hand is a functional drink that can accelerate calorie metabolism).