Explanation

In 1986, Pakistani president Muhammad Zia-ul-Haq visited China to improve diplomatic relations

Pakistan offered crucial support to China in the aftermath of the 1989 Tiananmen Square protests.

Additional information 

Tiananmen Square is a city square in the city center of Beijing, China,

They named it after the eponymous Tiananmen.

The founding of the People's Republic of China in the square was on October 1, 1949

The size of Tiananmen Square is 765 x 282 meters (215,730 m2 or 53.31 acres).