This view is one-sided and stereotyped. It is inappropriate and detrimental to team building to label people in a certain region and take targeted measures. What is more important in teamwork is to establish a good communication mechanism, clear goals and division of labor, positive feedback and incentives, and a cultural atmosphere of tolerance and respect. We should strive to create an open, fair, respectful and collaborative working environment, where employees can contribute to the team with their own abilities and efforts, no matter where they come from. We should promote positive and healthy teamwork by strengthening team building activities, cultivating common values, and enhancing understanding and trust among team members, rather than taking so-called "preventive" measures based on unreasonable stereotypes, so as to fully stimulate the overall effectiveness of the team and achieve common growth and development. Abandoning regional prejudices and focusing on individual differences and the overall development of the team is the right direction to build an excellent team.