Traveling Through Ancient Times, My Sister-in-law Sent Me a Pair of Twins

[Brainless and refreshing story + Easy farming + Domination of the world + Multiple female protagonists + Brother Cao] Zhang Dajian traveled to the ancient famine years, his family was penniless, his brother died of illness, leaving only his sister-in-law Lin Wanru. In order to prevent his sister from being sold, Lin Wanru took her two sisters back. In order to keep the three living people in the family well fed and clothed, Zhang Dajian had to work