iirc, if you switch rooms it will still stay at the number it was when you first started playing. That only happens in game, and it refreshes every once in a while.
If you want to know without waiting, just click that button under your avatar called "Player statistics", it will give you some info on yourself, including qi.
If you want to know without waiting, just click that button under your avatar called "Player statistics", it will give you some info on yourself, including qi.