Leave the suit with the larger number

For intermediate 6

Answer

Commentary

When you lost in choice, leave the suit with the larger number.

At first glance, they look the same, but there is a big difference when you draw the 5s.

Discard 7m

you are able to make ready hand when you draw 6s, 7s, and 5p

Discard 7s

you are able to make ready hand when you draw 7m and 5p.

Eventually, you have to choice 7m or 7s again. 

(In this hand, you had better to discard 7s, because  2 3 4 5 5 can change Ryan-men wait).

I think it's good to remember that in mahjong, when you can't dicede, leave the suit with the larger number.

Too hot day.

I have gone to beach, today.

Great sunset.

Tomorrow, Opening ceremony of Olympics is gonna be held. 

May it be a good day.