It's a stall at the crossover between Lebuh Chulia and Lebuh Carnarvon. In the chaos of annoying sellers you should find a cart with a huge pot and plenty of empty bowls on the cart. There will be plastic chairs and tables around. It's probably called "Mother And Son Wonton Mee stall" but Google Maps reviewers sometimes post pictures of the wrong place.

Old-school Dim Sum restaurant, recently renovated so it's safe to bring friends who never ate dimsums.

https://maps.app.goo.gl/NmkP1K8oTLNrNCaHA