 Biomacromolecules with poor mechanical properties cannot satisfy the stringent requirement for load-bearing as bioscalfolds. Introducing hydrogen bond strength in PACG contributes to a significant increase in the mechanical strengths of gelatin hydrogel with a high tensile strength up to 1.1 mPa. This article was authored by Fei Gao, Ziang Su, Qingfei Liang, and others.