What kind of person was Emperor Taizong?

Li Shimin was a talented and resourceful emperor who helped the world and people. Military and political accomplishment is very high, martial arts is good at riding and shooting, literary talent is rich, and he has written a philosophical "Emperor Fan". During his reign, he was able to protect the people and share joys and sorrows with the ministers of civil and military affairs. Before getting married, he had a good relationship with his brother and father. After marriage, especially after his father and eldest brother became emperors and princes, the family relationship alienated and gradually alienated. Because Li Shimin, Emperor Taizong, was not good at flattering the concubines of Emperor Gaozu and their families, he liked to mingle with civil servants and military commanders who risked their lives. Therefore, these concubines and their families often slandered Li Shimin in front of his father Emperor Gaozu, and people made mistakes. Over time, Li Shimin's flaws were infinitely magnified in front of his father, Emperor Gaozu, while Li Shimin was always there. Over time, Tang Gaozu's great-grandfather became prejudiced against his son Li Shimin, and he was dissatisfied with it. Having a son is worse than having an outsider. His eldest brother, the minister of civil and military affairs of Li Group, was afraid of becoming a prince, and they would lose their splendor, thus accelerating the estrangement between Li, Li Yuanji and Li. And Li Shimin fought bloody battles outside for the throne of his father and eldest brother and the position of Crown Prince. Not only did he not get their good looks, but he was repeatedly left out in the cold and even scolded by them, which made Emperor Taizong very depressed. He feels that the affection between father and son is not as good as others' pomegranate skirt and rhetoric after all.