You don’t ever want to be on board a 737 configured for domestic service anywhere in Asia... unless you’re 115# or under...
Ever fly a 747 SR, (not the SP but the SR?) Made for JAL, ANA and other Asian airlines. 11 across, about four or five extra seat rows, three overwing exits on each side so the extra passengers could all get out (supposedly.)
The PRC even commissioned Boeing to investigate a SRO 747 for short flights. It was to have about 180 seats, 460 standees!
On recent flight from Hong Kong to Shanghai, 80% of passengers smoked from boarding to leaving a/c, with about 20 standing in aisle ready deplane AS WE TOUCHED DOWN.
All as opposed to Turkish Airlines. All brand new 737 700s, 8 stewards to will not let you put your bag in the overhead (they do it all) and a good hot meal (hot sandwich) on a 38 minute flight! Great service. Pilots are mostly former Turk AF and very good.
Then there was the Ivory Coast Airlines Viscount flight to Ghana in 2004. A/C was built in 1957. I spoke to pilot before we took off. He asked me to explain “Magic Box” GPS to him. It was 1000 feet VFR down the coast until he saw Accra, then he was happy because he knew where the airport was!