Is it officially safe to sign Booker 365' s contract?

Formal, safe. Booker 365 is an online travel service platform company in China. Headquartered in Beijing, China, Booker 365 has branches and service outlets all over China. Only after the approval of the relevant departments can business activities be carried out. Without approval, it is not allowed to engage in Internet financial services such as P2P online lending, equity crowdfunding, Internet insurance, asset management and cross-border finance, third-party payment, virtual currency trading, ICO, illegal foreign exchange, etc.