In other words, the reason why Lu Yuan went to prison was not only his own "immortal, you can't die", but also Jiang Haokun's incitement to let Gan Jing and Lu Yuan break up and take the opportunity to join the partnership.
Jiang Haokun is cautious and shrewd. Long before Lu Yuan accompanied him abroad, he had a deep affection for Gan Jing. At that time, they had deep feelings for each other and had nowhere to start. It happened that Lu Yuan's "death" in America hurt Gan Jing's heart. Jiang Haokun rushed to be caring and attentive when he heard the news, turned a deaf ear to Gan Jing at that time, made Gan Jing feel guilty about Lu Yuan's "domestic violence" and went home with him.
Extended data:
Lu Yuan and Gan Jing went to the United States to study together and went through those difficult and beautiful years hand in hand. Lu Yuan also proposed to Gan Jing affectionately, and they made promises to each other in a big house. Lu Yuan promised to take care of Gan Jing for life, live hand in hand in this big house for life, give birth to many lovely babies together, and grow old together.
Originally, all this was so beautiful, but the sudden disappearance of Lu Yuan broke everything that was originally beautiful and calm. Lu Yuan had an accident and went to prison. Lu Yuan entrusted Jiang Haokun, an old classmate for many years, to the United States to appease Gan Jing and entrusted Gan Jing to Jiang Haokun. In order to let Gan Jing finish his studies in the United States with peace of mind, he told Jiang Haokun to hide the truth and his true whereabouts from her. Jiang Haokun used all kinds of deception and reasons to prevaricate Gan Jing, who tried every means to follow Jiang Haokun back to China.
References:
Good sir Baidu encyclopedia