There are a lots of 中國餐 and 中國 shops in Markham and Toronto. The 中國餐 is much better and cheaper than that in Ottawa.
For 好玩, in Toronto, maybe Center island, Ontario lake beach, CN tower, Edwards garden at Leslie & Lawrence, and Casa Loma - Toronto's Majestic Castle (I forgot address but you can search it by Internet).
One hour at Toronto west , the Safari wild animal park is a very good place to go.