[Wang Alex's perspective]

That being said, I decided to look for the place where Charlie might buy a phone card. Maybe he would leave something here that can help me. I found an old man basking in the sun by the roadside, hoping he could be a big help. "Big senior, do you know a place where I can buy phone cards?”

"What? Phone card? Yeah, yeah, yeah. " The big man got up with great enthusiasm and pointed to the bustling place in the city. "We are a small village, and only the city sells telephone cards."

"Then how can I find it?”

"There’s no need to look for...