Those people (in the photo) in the space industry do not work 997. It is only some private business who demand 997 against the labor law. SOE employees are required to work overtime when needed, but are compensated not only by cash, but also by shifted off-days. Non-contracted workers in SOE may also suffer from not being properly compensated overtime which breaches the law but never 997.
China didn’t get to where it is today by letting Aerospace employees sit on their butts.