This document outlines three key learnings from Shuang Li, the co-founder of EstateBaron, a startup founded in 2015 that has raised $2 million from 1400+ investors for 3 projects. The first learning is to choose the right partner to build a startup with. The second is to truly understand and suffer from the problem being solved. The third learning is to embrace mistakes made along the way and view them as opportunities to improve.