Explosive! Traveling Back to Ancient Times with Her Boyfriend to Be Fake Siblings

[No system + no golden fingers + farming + slow heat] Our Valentine's Day date was in flames, and my boyfriend and I traveled through ancient times! What's tragic is that at the beginning, people all fled the famine and were hungry. What's even worse is that in ancient times, people without men could not set up a household. In desperation, I could only try to trick my mother into taking in my sweetheart, and forcefully package my passionate boyfriend into a homeless godbrother. There is no system and no golden fingers. While pretending to be pure siblings, the young lovers secretly work together to cultivate land and support their families. At the same time, they prevent others from seeing through the tricks and embark on a journey of living a stable life in ancient times. Hey-hey