For Roujiamo, I recommend Yuanji Roujiamo. It tastes good, but now the quantity is getting smaller and smaller.
There are also the most classic Jijia Noodles and Ren Liang Noodles. They are all concentrated on Dongguan Fumin Road. Just ask people.
There is also a night market next to the district hospital that sells stir-fried and rubbed fish roe, which is delicious. There is also a restaurant diagonally across the street that sells noodles, which are good in black and reasonably priced.
The famous noodle shop on the street is ***. If I go there in the morning, there will be a lot of people. I guess I will have to eat outside with a bowl in hand.