Land reclamations of China
China is rather active in land reclamation. Since 1949 a large amount of artificial land has been reclaimed, mainly on its coastlines. China is among the countries which have built the most artificial land; from 1949 to 1990s, the total area of land reclamations from sea of China was about 12,000 km2.
The government of Hong Kong started reclaiming land from the surrounding sea as early as in the 1860s. Its land reclamation is still proceeding. A notable achievement is Hong Kong International Airport, built in the 1990s on reclaimed land, absorbing the former islands Chek Lap Kok and Lam Chau.
170% of the original size of Macau (or 17 km2) is artificial land. Currently the land reclamation of Macau is still ongoing.
...
Wikipedia