In 1938, the China Tea Corporation sent commissioners to Yunnan to investigate and planned to set up an experimental tea factory in Fohai, the source of big-leaf tea;

In 1940, the company with a scientific mechanical tea-making system Fohai Experimental Tea Factory was built, with Mr. Fan Hejun as the director.

Later, it was renamed Fohai Tea Factory, Xishuangbanna Tea Factory, and Menghai Tea Factory;

In 1950, the Communist Party of China took over the Menghai Tea Factory;

In 1973, the Pu'er tea artificial post-fermentation and aging process test was successful at the Menghai Tea Factory;

In 1976, the Yunnan Provincial Company held a province-wide Pu'er tea production conference , decided to label the tea products of Menghai Tea Factory as "2" at the end.

Since then, Menghai Tea Factory’s “7542” and “7572” products have become models and standards for Pu’er raw and cooked tea;

In 1989, Menghai Tea Factory was officially registered 70 The "Dayi" trademark came into use at the end of the 1990s;

In 1996, Menghai Tea Co., Ltd. was established;

In October 2004, Menghai Tea Factory completed a comprehensive restructuring;

In November 2005, the large-scale cultural event "Dian Tea Dayi World Caravan *** Tour" initiated by Dayi was officially launched. A large caravan consisting of 99 horses set off from Menghai and traveled along the The Ancient Tea Horse Road from Yunnan to Tibet arrived in *** and Shigatse in July 2006;

In May 2006, Dayi participated in CCTV's "My Long March" large-scale TV campaign as a full-scale public welfare partner , and raised tens of millions of yuan to establish the "Dayi Love Fund" to send Dayi's tens of millions of love to poor areas along the Long March;

In June 2007, Dayi Love Fund once again joined hands as a full charity partner CCTV created a tribute chapter "The Motherland Will Not Forget" for the 80th anniversary of the founding of the army;

In August 2007, Yunnan Dayi Tea Group was registered and established;

September 2007, Beijing Dayi Tea Cultural Exchange Center and Dayi Emperor Tea Club were built and put into operation one after another;

In November 2007, Dayi won the bid for CCTV’s 2008 prime time advertising resources;

In December 2007, the Yunnan Dayi Love Foundation was officially established;

In June 2008, "Dayi Tea Making Techniques" was included in the second batch of national intangible cultural heritage protection lists announced by the State Council ;

On November 1, 2008, Dayi initiated the establishment of the "China Love Tea Day" and officially launched it in Menghai;

In January 2010, Dayi Group officially signed a contract with Guangzhou In the 2010 Asian Games, it became its tea product supplier. This was also the first time that a Chinese tea company successfully sponsored an international large-scale comprehensive sports event;

In May 2010, Dayi, China’s first professional tea ceremony research institution The Tea Ceremony Institute was established;

In November 2010, the first postdoctoral research station in the tea industry was settled in Dayi Group;

In November 2010, Dongguan Dayi Tea Technology Co., Ltd. was established in Dongguan, Guangdong The city was established;

In 2011, the "Dayi" brand was officially recognized as a "Chinese time-honored brand" by the Ministry of Commerce;

In November 2011, Dayi Group Korea Co., Ltd. opened its doors in Busan Established;

In November 2011, the first "Dayi Carnival", a large-scale tea culture brand event, was held in Kunming;

In December 2011, the "Dayi" brand trademark was The Trademark Office of the State Administration for Industry and Commerce announced that it was recognized as a "well-known trademark in China";

In November 2012, the second "Dayi Carnival" was held in Guangzhou with the theme of "Urban Tea Love".