When Tang Mo learned that there were Elves in this world, he actually entertained the somewhat rogueish thought of giving it a try. After all, in his past life, he really had not had the chance to try out the Elf species, so full of fantasy.
However, due to a series of coincidences, he ended up marrying Alice and Yulin, and also had a cute cat-eared girl Yue'er, and thus did not go out of his way to seek out Elves anymore.
He's not a card collector, after all; there's no need to deliberately acquire an Elf wife just to satisfy his burning curiosity.
What he never expected was that the Elf Race had actually been plotting this idea for a long time: earlier, it was only because there was no princess of suitable age available, otherwise they would have set this plan into motion much sooner.