What was the final ending of the eldest princess, Qing Yu Nian?

Answer 1

In the novel, the Eldest Princess committed suicide. She had an affair with the Crown Prince and formed an alliance with the Second Prince. The Eldest Princess was under house arrest, and the Crown Prince was facing deposed. She colluded with the Qin family and the Ye family and sent people to assassinate the Qing Emperor. However, after the conspiracy was exposed, the Eldest Princess, Crown Prince, and Second Prince all chose to commit suicide. This ending was also in line with the law of power struggles.