Thank you for your replies.

I went to dealer. At dealer, it looked like pic 2, but below minimum level.

I visited the dealer 3 times for tranny leakage. The last visit was about two weeks ago.
Now it is already below minimum.

It is not likely that the dealer top it off incorrectly after replacing tranny reaction valve two weeks ago.
So I think it leaks again, though I did not yet notice sign of leakage undercarriage.
Dealer also thinks it may be leaking again.

I am disappointed and very tired. At the 3rd visit, the dealer said "I know this is third time. This time, we will really fix the tranny leakage."