Tetsuya - The Man Called Mahjong Master - Vol. 10 Ch. 80 - Dragged-Out Torture

[MangaDex]

 

[Doomroar]

Their geriatric tremors were the signals all along!?

 

[es_kan]

Watch it be just marked tiles or something.

 

[PseudoAngel]

Watch it be just marked tiles or something.

It's probably how many seconds from how they pick their tiles up to putting their tiles, hence the clock