Koryu (光竜) Chinese restaurant is located very near from Mother's house in Fukutsu, Fukuoka. As far as I remember, the restaurant has been running for minimum 15 years. It's a small Chinese eatery not only popular among locals, but salespeople or truck drivers often drive by, because it's on the national route 495 bypassing Fukuoka and Kitakyushu.
I visited Koryu a few days ago with Mother to discover a delightful dish, which was Gomoku Yakisoba 800 yen (I guess, don't remember precisely; indeed they had a few yakisoba [pan-fried noodles] options.) The description seemed to be closer to Hakka Noodles in India, which is one of my most favorite Indian Chinese menus. So I decided to go with it!
The yakisoba indeed resembled my Hakka Noodles, lightly soy-sauce flavored steamy hot noodles topped with a load of fresh cabbages, kikurage (judas-ear,) shrimp, kamaboko (sliced fishcake,) and so on. I loved it! One regret was that the volume of noodles was too much for me.
Visiting Fukutsu and feeling like to have a reasonable yet definitive Chinese for lunch? Drive to Koryu! They have ramen, chahan (fried rice,), as well as lunch combos such as yebi-chilli, subuta, and other main plates come with rice and soup. Staffs are also friendly and attentive and I bet you will enjoy your meal.