I have read some time-travel BG stories that I thought were okay, including time-traveling in books, reverse time-traveling, and inter-travelling, and most of them are Su Shuang plots.
It's a funny and inspirational campus story. The male and female protagonists and their classmates are very cute. The author is very skilled in writing and the plot and writing style are good.
The heroine travels through a red building and becomes Lin Ruhai's concubine. She mainly fights at home and raises cubs. Don't expect much love. In the later stage, she ditches the hero and works hard to become stronger. It's a bit suspenseful.
If the male protagonist is a little popular, it should be considered a good novel, and the female protagonist can be said to be the favorite of the group. The author is probably from Xi'an, and he writes very well about the customs and food in the streets and alleys of Xi'an.
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