Soon, Tang Feng arrived next door, at Zhang Xue's lingerie shop.
Approaching midday, the shop was nearly devoid of customers.
After entering, Tang Feng realized that Zhang Xue wasn't in the store either, with no sign of where she might have gone.
"Sister Zhang... Sister Zhang?"
Tang Feng softly called out twice, but got no response.
He guessed to himself she might have stepped out to buy lunch.
So, he went over to the cash register, placing the cup of milk tea on the counter.
Then he pulled out his phone, preparing to send Zhang Xue a WeChat message to let her know he had brought her a cup of milk tea.
"Mmm... mmm..."
Just at that moment, suddenly, a woman's soft moan echoed from behind the curtain at the back of the cash register.
It wasn't very loud, but the shop was so quiet without anyone else inside that Tang Feng heard it very clearly.
He instantly recognized it as Zhang Xue's voice.