Here is my abridged translation of the blog post:- "On this trip to Guangzhou, my son and I have found new installations that flank both sides of every busy road crossing – a ‘traffic coordinator’ clothed in a yellow vest beside the traffic light on each side, waving a small red-and-yellow-patterned flag, blowing the whistle in tandem with the alternating change in lights and directing the pedestrians and vehicles.