What's alarming- it's never been this bad before in the building's 20 year history (including typhoons), and for three days, which I think rules out the usual excuses.
I like the one about Coriolis effect with HDD's mining chia bitcoin lol. All that spin spin spin, yeah that caused the shaking
Using sea sand for concrete, which corrodes rebar, fake rebar, rebar that shatters, building something before drawings are finished, building 2.7 floors per day "shenzhen speed", changing the design on the fly - what could possibly go wrong.