> What's a Chinese firewall?

"The Great Firewall (GFW; simplified Chinese: 防火长城; traditional Chinese: 防火長城; pinyin: Fánghuǒ Chángchéng) is the combination of legislative actions and technologies enforced by the People's Republic of China to regulate the Internet domestically" [1].

(I don't think they mean a Chinese wall [2].)

[1] https://en.wikipedia.org/wiki/Great_Firewall

[2] https://en.wikipedia.org/wiki/Chinese_wall#Alternative_terms