As of now, there is no official confirmation that Li Jinyu has taken over offensive training for China's national team coaching staff. However, there have been reports and speculation about his possible appointment.
Some sources suggest that Li may be the new head coach of the Chinese national football team. He has previously worked as the head coach of the China U-23 national team and the China women's national football team. Additionally, he has experience working with youth teams in China, including playing for the Chinese U-17 national football team.
It is not clear whether Li will be appointed as the head coach of the Chinese national team or if he will take on a different role within the coaching staff. The decision to appoint him as the head coach will depend on various factors such as the current coaching staff, the performance of the players, and the overall strategy of the team.
Regardless of who takes over as the head coach of the Chinese national team, it is important to note that the team needs a strong and experienced head coach to lead them to success. With Li Jinyu's experience and expertise, it would be beneficial for the team to have someone like him leading them.