Hmm...would this work?
12/23
CA102 HKG - PEK
UA850 PEK - ORD
UA245 ORD - YYZ
AC470 YYZ - YOW
Seems like it should and result in ~$130 in fees, not including the $30 booking fee. This and 117,000 miles for a one-way reward...haha. Have to sleep on it.