Priceless treasure. A treasure whose price is immeasurable. A metaphor for something extremely precious. "A Gift to My Neighbor's Girl" by Yu Xuanji of Tang Dynasty: "It is easy to find a priceless treasure, but it is rare to find a man with a heart." It is priceless. Price: price. Liancheng: Many cities connected together. Describes items as extremely rare and of extremely high value. Sima Qian of the Han Dynasty wrote in "Historical Records. Biography of Lian Po and Lin Xiangru": "When King Zhao Huiwen was the king, he obtained the Chu He family bi. King Zhao of Qin heard about it and sent someone to leave a letter from King Zhao, willing to give fifteen cities to Yi Bi." A thousand gold in a moment. Moment: a moment, refers to a very short time. Time is very precious. Also known as "a moment of gold". Song Dynasty Liu Zhen's "Qing Chunze. Bingzi Yuanxi": "The lights are shining in the spring, the towers are soaked in the moon, and a good night is worth a thousand gold." A promise is worth a thousand gold. Nuo: Promise. Describes a person who is very trustworthy and true to his word. Also known as "a thousand pieces of gold and a promise". Sima Qian of the Han Dynasty wrote in "Historical Records: Biography of Ji Bu Luan Bu": "It is better to get a hundred pieces of gold than to get a promise from Ji Bu." One word means a thousand pieces of gold. It originally means to increase or decrease one word, to reward a thousand gold. Describes the extremely high value of poetry or calligraphy works. "Historical Records. Lu Buwei Zhuan" written by Sima Qian of the Han Dynasty: "Lü Buwei asked his guests to write down what they heard and compiled it into the Eight Readings, Six Treatises, and Twelve Chronicles, with more than 200,000 words. In order to prepare for the past and present affairs of all things in the world, he called it "Lu's Spring and Autumn Annals": A thousand gold pieces of gold are hung on the gate of Xianyang City. Anyone who can add a word to the guests of the princes and tourists will be given a thousand gold gold of gold. City: Buy. Han Dynasty Liu Xiang's "Warring States Policy. Yan Policy One" records: King Yan Zhao wanted to recruit talents, and Guo Wei used horses as a metaphor to say that in ancient times, there was a monarch who asked for a thousand-mile horse with a thousand gold coins, but he could not get it in three years. Later, a person from Juan helped him buy a thousand-mile horse in three months. However, the horse died, so Juan "purchased its head of five hundred gold and repaid you in return." Less than a year later, he got three thousand-mile horses. It is a metaphor for sincerely and eagerly recruiting talents. Also known as "a thousand gold buys bones". Your supplementary question is really too late, and it is a bit far-fetched, giving people the feeling of having ulterior motives. . . . . . However, your supplementary question is a good idiom riddle: an idiom "describing tickets that are relatively expensive" - ??taking advantage of others' danger!