Idiom describing coincidence?

Only occasionally count: divination; Number: gas number; Only: only; Occasionally. Divination is sometimes very useful, just by accident. Metaphor just happened.

Occasionally: it just doesn't happen; Unexpected failure.

Source: Wang Hanchong's "On the Balance and Immortality": "Jing Ke's plan to enter the Qin Dynasty was originally intended to rob the Yan people alive, but he was unfortunately caught by Qin."

Coincidence: seeking: discussing; Close: consistent. Without prior discussion, opinions or actions are completely consistent.

Hit the nail on the head: the metaphor is inappropriate; But I was lucky to get a satisfactory result. Crooked: incorrect; Reading: Click

[Out]? Zhou Mingsheng's Biography of Awakening Marriage: "Fry traditional Chinese medicine; Send it to the tide club to eat. Who wants to hit the nail on the head; This is also Dr. Yang's lucky season. After taking the medicine, I slept soundly. "

Coincidence: It just happened to meet that time.

Source: jinghuayuan. The seventy-first time: "It is also a good time to kill trees; Although there is nothing wrong with other families, the suffocation is invisible, and only his family knows it first. " Also known as "will serve".

Mishit error: it means that it has not been carefully considered in advance. Happened to meet.

Source: A Dream of Red Mansions. Sixty-two times: "It's just a chance encounter; I said I had an appointment, but I didn't.

Coincidence: (Proverb) Without coincidence, there would be no story. It means that things happened very coincidentally. Also known as "no coincidence is a book" and "no coincidence is a book".

Wrong: just right, just right.

Source: History of the Five Dynasties Pinghua Zhou Shi Juan: I took a marble to shoot birds, but I didn't shoot birds. Accidentally bumped into the temple of Gu Rui's child donkey next door. Also do misconduct.

Just right: just right. It is apt to describe doing things and talking.

Source: Qilu Deng. Back to the 108th time: "The degree of reward is Yan Zhongduan's discretion. If the amount is appropriate, everyone will be happy. 」