Let me get this straight.In season 1, Wu JingHao travelled back to highschool days. Which is timeline 2In season…
timeline 3 is actually same as timeline 2, except the photo wasn't revealed still because of han fei's dad. that was the key change of timeline 3 from timeline 2. thats why they reached college
and thats why jing hao remembers his time travel in timeline 3 because he did the time travel there.
That ending was unnecessary. They basically made episode 2-23 useless. It could've ended as just WJH and HF living happy on the 3rd timeline. Because if HF returned to her timeline, wouldn't the same happen to WJH?
and thats why jing hao remembers his time travel in timeline 3 because he did the time travel there.