Explanation:

China has launched homegrown AG600, the world’s largest amphibious aircraft (currently flying). The plane is codenamed Kunlong.
The AG600 is one of China's three "big plane projects" approved by the State Council of China, along with the Xi'an Y-20 and C919
It is intended for both civil and military roles. In civil use, it is intended for fighting forest fires and performing marine rescues, marine take-off and landing.
It is also intended to meet China's strategic defence needs in the South China Sea area, which has been subject to various territorial disputes.