To manually add your weight and body fat percentage:

Open the Huawei Health app, go to Me > My data > Weight management > Add record or touch the Weight management card on the Health screen, and select Add record to add the current user's weight and body fat percentage.

The initial value in the Weight management card is the first value measured after a target is set. If you change the weight goal, the initial value will change to the latest measured or manually added data.