Andrew Koji had to learn all his Chinese dialogue phonetically.
This series is based on an original series concept co-developed by Bruce Lee for a proposed TV series that ultimately was modified into Kung Fu (1972).
Lee, O'Hara, Bolo and Mei Ling were named after the characters in Opération dragon (1973). In the film, Bruce Lee and Bolo Yeung use their real name as "Lee" and "Bolo", respectively.
On 15 April 2021, it was announced that the series has been renewed for a third series and will move to HBO Max, as Cinemax has ceased to produce original content.
Whenever the Chinese characters speak with white characters in English, they do so in noticeably more accented and simplified language than when they talk with other Chinese people. The exception to this seems to be the main character of Ah Sahm, underlining how he's supposed to be pretty equally skilled at English as his native language.