>China’s first Type 075 ship to be based in Hainan amid South China Sea tension
https://www.scmp.com/news/china/military/article/3113232/chinas-first-type-075-ship-be-based-hainan-amid-south-china-sea
>Satellite photos appear to show Chinese submarine using underground base
https://www.cnn.com/2020/08/21/asia/china-submarine-underground-base-satellite-photo-intl-hnk-scli/index.html