What does "how high is the sky" mean?

Meaning: Only real dragons know how high and wide the sky is.

The source is Liu Yi, the owner of Zhenlong Cigarette Factory.

This goes back to August 2002. At that time, Guangxi Nanning Cigarette Factory was providing information about its upcoming new product "Zhenlong". It is said that shopping in Dubai is very cheap? Is accommodation expensive? # Xi An Gucheng Youth Hostel # Hello, I want to ask, if ... I can buy things in duty-free shops with my ID card # Tonglu Red Lantern Cabin # What's the difference between shopping in Hong Kong and in Area A and B? Where can I find good and cheap ones? # Tianjin Yijing Hotel (Tianjin Xianshuigu Store) # Order online ... # Orange Crystal Hotel (Guangzhou Baiyun Airport Store) (formerly Huadu ... # Jinjiang Star (Tianjin Airport Store) # Can accommodate three adults ... Su Min Chun 'an Kingfisher Manor 407 standard room, left electric ... # Tokyo Shinjuku Washington Hotel # Do you have toothpaste and toothbrush? We entrust Nanning Zhenlong Yewei Advertising Co., Ltd. (hereinafter referred to as Zhenlong Advertising Co., Ltd.) to publish an announcement in the newspaper to collect advertising terms for its new products, requiring that the words be concise and easy to remember, which can fully reflect the product characteristics. Zhenlong Advertising Company, a branch of Beijing Dong Wen Advertising Company, has successfully planned the advertising and marketing of famous brands such as "Furong Wang" and "Baisha". On September 13 of that year, Zhenlong Advertising Company published a notice of "Advertising Terms for Giving Zhenlong" 100,000 Yuan "in major media in our district, indicating the reward method, and the first prize of 1 0 was awarded 80,000 Yuan; The second prize is 5000 yuan each; Three third prizes, each 1000 yuan; The finalists are 14, each in 500 yuan RMB. The notice also made a special explanation for the selected advertising language: "All submissions will not be returned, and the right to use and ownership of the shortlisted works belongs to Nanning Zhenlong Yewei Advertising Co., Ltd. ... A corporate advertising language has received 80,000 yuan, which is the first time in Guangxi. This activity has aroused widespread concern from all walks of life. Liu Yi, a reporter from Guilin Daily, has carefully created 13 works within the prescribed submission period, one of which is "How high is the sky?" Ask the real dragon. This activity * * * received more than 30,000 application advertisements, and the winning works, including the finalist prize, were selected by readers' voting and expert review. From the end of June, 5438 to February, 2002, Zhenlong Advertising Company published an award announcement in the media. Cheng Xingguo from Hunan won the first prize with the slogan "Success makes a real dragon", and Guilin Daily reporter Liu Yiyi "How high is the sky?" The slogan "Ask the Dragon" won the finalist award. Zhenlong Advertising Company also informed in the announcement: "Winners, after seeing this announcement, please bring valid certificates to attend the award ceremony". On February 26th of that year, 12, the award ceremony of100000 yuan for the slogan of "Southern Yan" was held in Nanning. Afterwards, "Nanyan" and "Zhenlong" cigarettes launched an overwhelming strong advertisement in the whole country with the slogan "Success achieved Zhenlong".