The gift is a set of ancient books that she once wanted most and liked most.

these ancient books have been lost for a long time, and Mu Chu Di has not found them for a long time.

she never mentioned the ancient books to anyone. The people in the world who knew that she was interested in it, except Xia Ranran, could never think of anyone else.

but Xia ran had already given the gift. It was a beautiful luxury necklace. Besides, Xia Ranran should give it by himself.

there is also a greeting card in the ancient books, which is a poem of a foreign poet she likes...