Zipper bags?

There's always a reason for every creation.
I asked, "Why they use blue and yellow for the zipper bag but not other colours?"

Then I found at the packaging it says,

"Blue and yellow will become green to let u know that it's closed."

^^

Yesterday went to arcade, not to play the games but to collect the tickets (to exchange stuffs).

Friends gave me. How much?
my pocket had no enough space and have to "borrow" someone else's pocket.

Hua counted nearly 700 tickets, wonder if he counted wrong.

Ciao to do my workS.
bizzy bizzy