I believe that all readers who are familiar with history are full of certain regrets about history: maybe it was Fusu who had tens of thousands of troops but committed suicide because of a false edict, or the ruthless prince Liu Ju who was forced to rebel by Jiang Chong and others, or Prime Minister Zhuge who dedicated himself to death but failed to conquer the Han Dynasty...
The author is also full of various regrets about history, and the deepest regret among them is that Prince Li Chengqian did not ascend to the Dabao.
"Ugh, Prince Cheng Qian has not woken up for three days. He may not be alive soon. I hope your Majesty will make plans in advance."