In general meaning personal assets means car, property, business, bank statement anything which have significant value in market. But for CHC is just a way to refuse you
Three things really matter a lot that's why I recommend Pakistan applicants to choice a good education center and if your choosing college avoid going Toronto right now unless your course is unique and different from other such as flight aviation.
1. Your University or College in which your going
2. Your past education
3. Bank Statement