I don't tell China to do anything. I just observe China's behaviour as a very powerful country. While they have 50 times the strength of the USSR, their behaviour of displaying power is not even 1/100th of the USSR or USA.
I don't care what China wants to be and how it wants to behave. I just observe that great superpowers of the past and the present one show different behaviour and that's how they command respect and leadership role in the world. China has some goodwill in the world today, but nobody takes it as a leader, nobody counts on it as a saviour should they be attacked. It will remain that way as long as China has this attitude. Superpowers that assume the leadership role of the world behave differently, they behave like alpha males in street fights.
Which is fine, that's the choice of China and people of China.
For other nations, China doesn't look like a superpower, the US does. And it's all because of the attitude.