Haven't looked for anything on Zhang Bangzhi yet, but wasn't too concerned just based on the role.
Based on the dd and filings I get the impression Cclee, Hsin-Jung Lee and Hsin-Che Lee may be Wylee's son and daughters. Cclee's LinkedIn reflects that he has or will be finishing up a PhD in 2020. IMO it feels like Cclee is or will be taking over running the family businesses full time with Wylee apparently still involved behind the scenes as CTO.