Posters are installed all over F.N.T restaurant in the CBD of Beijing, on April 14, 2015. [Photo/Song Wei]

The poster, named Upstairs and downstairs, on the left reads "(I) went to work in the underground of this office building after graduation. Upstairs can be found the most prominent law firm, Jindu, in China, in which many of my classmates work. To my satisfaction I never go upstairs to visit Jindu, while my classmates often come downstairs to visit F.N.T."

The poster, named Bodhisattva blesses our brothers, on the right reads "We (Zhang and his partners) went to the Lama Temple to pray for good luck for F.N.T before its opening on March, 2014. My wish is that 'no matter rich or poor, we are good brothers who spend the rest of our lives together. The past time never comes back'."

"My thinking is to build a platform to connect people," Zhang said with his upper body leaning forward and an intense look into your reporter's eyes.

Among a generation growing up in the Internet era, he realized his goal by mobilizing the web. Before starting business, Zhang and his partners worked hard to promote their products and brand on their personal accounts of the country's most popular social media such as instant messaging platform QQ, Sina Weibo, China's version of Twitter and messaging app WeChat.

In the third month after his restaurant opened the number of followers on the three social media outlets has reached nearly 10,000.

The continuous growth of fans and curious people visiting F.N.T restaurant exceeded the capacity of the 30-square-meter space, secluded at the end of a lone aisle in the underground of an office building.