16. China also has long coasts on the
Sea, and
Sea.

China also has long coasts on the East China Sea, and the South China Sea.

Explanation:

China is a country in East Asia. The People's Republic of China has a highly centralized and authoritarian government with a communist constitution and a one-party system, but a free market and a highly industrialized and fast-growing economy.  

China has diverse landscapes, with high mountains like Tian Shan and the Himalayas and the Taklamakan and Gobi deserts in the west, and fertile plains and plateaus in the east. The latter have a continental climate in the north with very cold winters, but in the south there are subtropical rainforests on the border with Vietnam and Laos. The territory is bordered to the north by Mongolia and Russia, to the east by North Korea, and to the west by Afghanistan, Kazakhstan, Kyrgyzstan, Tajikistan and Pakistan. In the south, India, Nepal, Bhutan, Myanmar, Laos and Vietnam are neighbors. In addition, China has a coastline of 6,400 km to the east and south that is bordered by the Yellow Sea, the East China Sea and the South China Sea.

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explanation:

yes he did writing dots to make the answer