"You didn't count to a hundred!" I try to pretend to be calm.

"I've got it, I've got it!" Bud sister said stubbornly.

she's really a liar, "if you tell me how to open this door, I'll hide with you."

Ya Mei shakes her head. "It's useless. There's no way to open it."

I thought about it and asked in a different way, "do you know how to open this door?"

"25 times in a row."

I'm secretly glad that younger sister Ya loves to lie. It seems that she didn't mean it.

I began to clap the door continuously, silently counting: one! Two! Three! Four

"sister, I can't open...