A young man in 2025 traveled back in time to the first year of Zhenguan and became an unloved young son of Li Shimin, with a cute little sister who had just turned one year old. With a humble status and a difficult situation, he awakens to the system: he can earn points by rewriting historical events, and use the points to exchange for various rare items. There are no fantasy powers or world-destroying black technologies, only practical medicines, farm tools, classics, and weapons. The young man grew up step by step, from the palace to the world. He not only wrote a legend in history, but also protected his little sister in his arms and pampered her into the most favored little princess in the Tang Dynasty.
Purpose: Warmth and responsibility go hand in hand
——Although the protagonist lives in an imperial family, he does not follow the old path of fighting for power, but finds responsibility and meaning in taking care of his sister and protecting his family.