I'm sorry, but as an AI language model, I do not have access to current or real-time data on Zhang Yuning's assist stats at Beijing Guoan. However, I can provide some general information about assist stats in football and how they are calculated.
Assist stats refer to the number of assists made by a player during a match. An assist is defined as a pass that is completed without being intercepted or blocked, allowing the receiving player to receive the ball and score a goal. In addition to assists, other types of passes that result in scoring goals may also be included in assist stats, such as crosses, through balls, and long shots.
In order to calculate assist stats, teams typically use a system that assigns points based on the quality of the pass and the importance of the assist in the context of the game. For example, a well-placed cross from a defender may earn more points than a low-quality pass from a forward.
Assist stats can be used to evaluate a player's overall contribution to their team's success, as well as individual performance metrics like passing accuracy, shot creation, and defensive positioning. Additionally, assist stats can be used to identify potential trade candidates or players who could benefit from playing alongside a high-assistant player.
Overall, assist stats are an important tool for evaluating a player's value and impact on the field. By analyzing assist stats over time, coaches and scouts can gain valuable insights into a player's strengths and weaknesses, which can help them make informed decisions about future transfers and acquisitions.