The vehicles are driving on the left side of the road, which is common in places like Hong Kong or the UK. The road markings and the specific style of the overhead gantry structure strongly suggest a modern highway in Hong Kong. The vegetation looks tropical or subtropical, consistent with the climate in Southern China. The architecture of the road infrastructure is very characteristic of Hong Kong's highway system. I am reasonably sure this is Hong Kong.

then: forward

The left-hand driving and the specific design of the highway barriers and overhead gantries confirm my suspicion of Hong Kong. The hilly, green terrain in the background is typical for the New Territories region of Hong Kong. The road markings and the light poles are consistent with major expressways like the Tolo Highway or similar routes. I am very confident this is Hong Kong.

then: guess