Apparently Hakka fried noodles (客家炒麵, NT$90) is mushu fried noodles with a slightly different sauce – at least at this restaurant. Also ordered shrimp fried rice for the kid (蝦仁炒飯, NT$90). They offer unlimited green bean soup (which, according to the sign, is sometimes red bean soup).
I’d come again to try more of their 熱炒 dishes. Convenient if you’re in the Wufenpu clothing district.
老北京麵食館
110台北市信義區松山路146號
No. 146號, Songshan Road, Xinyi District, Taipei City, 110
https://goo.gl/maps/RPwSjwrcaTx