OP profile is London, so no WOH Chase Visa, nor Chase Sapphire Preferred or Reserve.

We're all assuming that you're staying alone and no family which makes logistics simpler.

Remember the current 3X points Bonus Journey promotion ends Sept. 15, so if the stay starts before Sept. 15, then you must check out on Sept. 15 to receive the bonus points. Stay at another hotel for a day and return for longer stay to reach 30 total nights and Globalist status. Then again China has quarantine requirement, so you'll likely to be in quarantine during the Bonus Journey promotion anyway.