1/4-1/3 EVs is an underestimate for somewhere like Shenzhen (probably for Beijing too). It's going to be well over 50% there. And virtually all scooters will be electric.

You're right about the smoking, though. It's a massive problem.

it's definitely not underestimate for Beijing where I stayed for 3 weeks this summer, maybe you count PHEV as EVs, many of those cars which look like EVs are actually hybrids, only in late 2025 China reached 50% newly registered BEV+PHEV cars plus there are lots of previously registered cars and if we count only BEVs the percentage will be much smaller, actually I think 1/3 of BEV on the road is quite an overestimate from my side

are NEV common? sure. do BEV make majority of cars on the road? for sure not

there are basically none scooters, they use either (e)bikes or electric motorbikes/mopeds (these are not new, they used them en masse already 10 years ago)