This is just my idea

Joes scanned the area but did not see anyone in the alley. It was a little too quiet.

He walked straight to the end of the alley. The ground was a little wet because of the weather.

Hence, Qiao si si also slowed down her pace. However, the path was not long and they soon arrived at the location of the Qin's treasure store.

Looking at the tightly shut door, she blinked and took a step forward.

"Knock, knock ..."

It was still the familiar knocking sound. The knocking sound was very soft, but it was still very clear in the quiet alley.

"Grandpa Qin, it's me, Qiao sisi. I'm the one who came to visit you yesterday." A crisp sound rang out.

After Qiao si si knocked on the door and finished speaking, she stood at the side and waited for the door to open.

According to Grandpa Qin's personality, he would have opened the door for her when he heard her. After all, they had met yesterday.

However, the truth proved that Joes was wrong.