Most Chinese domestic flights early 90'ies, but the memorable one was an SAS B767 flight Beijing to Copenhagen about the same time.
While climbing out of PEK something went bang, and the whole aircraft started to shake like crazy. I actually thought some large panel had come off and was flapping around. Some were visibly upset, had a couple across the aisle saying their last goodbyes and some muted screaming was heard from Economy.
I did my best stiff upper lip and managed to get another whisky before the captain apparently issued some orders to cabin crew and they started a walkabout checking on belts and people.
After what seem like an eternity the vibrations subsided, the Swedish Captain came on the PA and we returned, and landed back at PEK. Luckily Swiss, Lufthansa and Air France all held their flights and those who didn't want to spend more time in Beijing was divided between them. I was only delayed about 3 hours, not bad.
Per