The Traditional Chinese characters on the signs and the abundance of scooters parked on the sidewalk are classic indicators of Taiwan. The "World Gym Express" branding and the specific style of the truck signage strongly point to an urban environment in a major Taiwanese city. The dense, multi-story architecture with balconies is very characteristic of Taipei or New Taipei City. I am fairly confident this is in Taiwan.

I suspect this is in Taipei, Taiwan. I am 70% sure.

then: forward

The red curb markings are a very common traffic regulation in Taiwan, indicating a no-parking zone. The phone number format on the truck is consistent with local business practices in the Taipei metropolitan area. The dense urban architecture and the specific style of the utility poles confirm my initial assessment of a high-density Taiwanese city. I am now very confident that I am in the Taipei area.

I suspect this is in Taipei, Taiwan. I am 90% sure.

then: guess