Sukuna does die in the manga. The way it happens is quite dramatic and ties in with many other elements of the story, adding depth and tension to the overall narrative.
No. Ryomen Sukuna is a fictional character from Japanese mythology and modern manga/anime. He doesn't have a basis in a true historical event or person.
Nope. Ryomen Sukuna has no basis in reality. It's a product of the creative minds of the writers and illustrators who designed a captivating fictional character for the enjoyment of the audience.
The Qing Yu Nian novel did not describe the specific chapter where Yan Bingyun stabbed Fan Xian. This plot was adapted from the TV series " Celebrating the Year " to create suspense and keep the audience's expectations. Therefore, it was impossible to determine which chapter of the novel Yan Bingyun stabbed Fan Xian in.