I have not been to People's Park for quite some time but half of the food centre has since been converted to a bustling mecca for foodies who enjoy Sichuanese cuisine (think: grilled fish and mala tang).
Tian Jin Fong Kee is one of the few stalls in that particular half of People's Park Food Centre which serves something rather different --- jiaozi or a Chinese type of dumplings.
Guo tie (or potstickers) is a pan-fried jiaozi. Unlike jiaozi, the skin tends to thinner so that you have a nice crisp layer around the hot, juicy meat and chives fillings. For $7, you can get 10 juicy and plump guoties from Tian Jin Fong Kee. They are really delicious and definitely value for money!