ur right. xiang liu gifted her the doll which he sealed up so she could never open it in the name of jing. xy spent years to make the glass ball for him. The couple in the glass ball represents them. Edit: the glass ball is what was sealed inside the doll in which xiang liu wrote his final words for her but he sealed it so she could never see it.
This is the chapter where he makes it if u wanna read. Its the epilogue.
Edit: the glass ball is what was sealed inside the doll in which xiang liu wrote his final words for her but he sealed it so she could never see it.