Calling photo sleuths: where is this photo?

There's a photo of a street scene in HKU Library's Frank Fischbeck collection that claims to be somewhere in Hong Kong in the 1920s but I suspect it might not be. 

Photo link here

My reasons: 

1. The wooden utility poles don't look like Hong Kong. I know Hong Kong Electric stopped doing overhead power lines in 1905, but since this is supposed to be the 1920s they could be telephone poles. All the other telephone poles I've seen in pictures of old Hong Kong were metal. However, I could be wrong here, I don't know whether CLP had overhead wires in Kowloon or when they undergrounded them.
2. There's a sign on the left that reads in Chinese "Guangzhou City Long Distance Bus Service". I doubt Hong Kong had a bus service to Guangzhou in the 1920s. If it existed, the route would've been very roundabout since the only road crossing was at Sha Tau Kok.
3. It's possible the photo was misdated but if this was taken in Hong Kong after the 1920s there wouldn't have been any telephone poles, as they were taken down by the late 1920s.
4. One of the pillars on the right side of the street reads "Zhongshan Sea and Land Military Uniforms," which does not sound like Hong Kong.

My guess is that this was taken somewhere in Guangdong Province, probably Zhongshan. Any ideas?