Is the front-end development of the US Mission hard?

Thanks for your hard work. According to official website, directly hired by boss, the front-end development of Meituan needs to adapt to long-term overtime, and its business is highly complex, involving various life services such as take-away, group purchase, hotels and movie tickets. There are sixty or seventy middle and back-office projects to be developed and maintained by a department, which is very difficult and faces great work pressure, and often stays up late and is very hard.