If I find elf girls in a box, should I marry them all?

Ye Xingyu was surprised to see a scene unfolding in his aquarium: a mercenary group capturing an elf.
Ye Xingyu initially thought it was a toy, but after killing the mercenaries, he discovered that it was all real!
One grape can feed a village of elves.
A single finger can crush a sword saint.
An electric mosquito swatter can electrocute a giant dragon.
Originally, Ye Xingyu wanted to live a leisurely life with this little ability, until one day, he discovered that his hand, magnified two hundred times, appeared in the sky.

Novel keywords: "An Elf Girl Appears in a Box, I'll Marry Them All?" (No pop-ups, full TXT download, latest chapter reading)