Gu Joy is actually very determined deep down, and she will definitely wait for Zhou Yanlin to come back.
Zhou Yanlin might still not understand himself; she is the kind of person who is very persistent. Unless it's the other person's issue, she will stick to it till the end.
If she didn't like him, she wouldn't have agreed to be together in the first place.
When Zhou Yanlin heard what Gu Joy said, he finally smiled. He was waiting for these words from Gu Joy.
Although he knew that Gu Joy would wait for him, he still wasn't that confident deep inside.
Now he felt uncertain and thus wanted Gu Joy to make a promise, so he would feel more reassured.
Before going abroad, he wanted to leave Joy with a keepsake, so he took her to buy a ring.
This is temporary; there will be a diamond ring later.
Zhou Yanlin already secretly thought that he would make Gu Joy the happiest woman in the future.
After chatting for a while, they then went back.