Riding a donkey to find a donkey is not funny at all, but what does regret mean?

This is a character from the novel Chen's Life, Zhang, a child who has been hanging out with the protagonist Chen since childhood. Later, Chen and Chen came to Shanghai to conquer the world and take refuge in Zhang. This is the origin of the name. Before Zhang was born, Chen's grandfather commented that the child, "Tiger, Leopard and Foal have eaten the cow even though they are not tattooed", was only fourteen years old, and left Zhang's name before Zhang was born. Later, after Zhang was born, Chen felt that "800" was too imposing and changed it to "3,000". This replacement is also the main source of the landlord's doubts. Listen to me as follows: After committing a crime in Shanghai, Chen ordered Wang Hu and Zhang to flee and agreed to meet at Jiming Temple in Zhongshan, Nanjing. After the meeting, Wang Hu left Zhang 3,000 as an apprentice. This incident was heard by an elderly nun in Jiming Temple. He gave the evaluation that "the side door is 800, and the left road is 3,000. It is not ridiculous to ride a donkey to find a donkey, but it is a pity". If the landlord wants to hear my humble opinion, I can say two things: 1 This sentence is about Chen. Change Zhang's name from Zhang 800 to Zhang 3000, one is a side door and the other is a left road, which is equivalent to riding a donkey to find a donkey, and neither is a horse. The nun's evaluation of Chen's behavior is not ridiculous, but regrettable. "Not ridiculous" is because it can be seen from the name change that Chen has a superior heart. "Unfortunately" is a nun's regret for Chen sitting in his hometown and looking up to heaven. Now that Chen has fallen to Nanjing, the old nun also feels pity. 2. This sentence is for Zhang. When Zhang arrived in Chen's hometown and countryside, he still worshipped Wang as his teacher. This is an act of riding a donkey to find a donkey. Chen's grandfather's silence on the fate of Zhang after the 14th National Congress is an unpredictable silence on Chen's future. Among them, there is a kind of helplessness to fate. Zhang, a talented person with a skill, ended up like this. This is not ridiculous, but a pity. Generally speaking, the old nun said that "riding a donkey to find a donkey is not ridiculous, only regret" is a kind of helplessness to fate. Those who try to change their destiny but can't change it are not ridiculous, but only regrets. I hope my answer will satisfy you.