If you 晚上回加拿大居住, you probably should 更換中國護照 in 加拿大. Find a consulate in 加拿大 that close to where you live for 更換中國護照.
舊護照 will NOT be 當場返還. You may need to take a few days from your work so that you don't have to travel every day. You can start travel again when you receive your 新護照. 舊護照 will be returned together with your 新護照.
舊護照 will NOT be 當場返還. You may need to take a few days from your work so that you don't have to travel every day. You can start travel again when you receive your 新護照. 舊護照 will be returned together with your 新護照.