How much of the novel 'The Da Vinci Code' was true?

The Da Vinci Code was a famous novel about the famous scientist and painter of the Renaissance, Da Vinci. Although the book is widely regarded as a fictional novel, some of the plot and characters have been verified. For example, Da Vinci was indeed a famous scientist and painter. His paintings and works of art are still appreciated and appreciated by people today. His research involved many fields, including physics, biology, anatomy, astronomy, etc. His theories and contributions had a profound impact on the development of modern science. In addition, some of the history of Da Vinci and his family was true. Da Vinci's father was a famous doctor and architect. His family was also an important aristocratic family during the Italian Renaissance. Da Vinci's mother was also an outstanding artist and scientist. Her father was Da Vinci's first teacher. Therefore, Da Vinci's family and history were also the background and foundation of the story of The Da Vinci Code. Although the Da Vinci Code is a fictional novel, it involves many real historical and character stories. The authenticity of these plots and characters is helpful for readers to understand the culture and history of the Renaissance.