Question: When was the Quanjude restaurant established in Beijing?
About the article "Peking duck", section "History".

Candidate passages:
Quanjude has eight direct branches in Beijing.
The original location operates in Qianmen with several other branches in other locations in Beijing.
There is a seven story restaurant on Hepingmen Ave., was a location that hand-picked by former Chinese Premier Zhou Enlai.
Serving up to 5,000 meals a day, this restaurant covers a floor area of 15,000 square meters with over forty private dining rooms and can simultaneously seat 2,000 guests.
Having established a history and affiliation with the Chinese government at the municipal and central state level, Quanjude has often been used to hold state banquets and to receive celebrities, dignitaries, and important government figures from over 200 countries as distinguished VIP guests. 
A number of restaurants in Beijing specialise in Peking Duck.
Examples include Quanjude, Bianyifang, Changan Yihao (長安一號), Beijing Xiaowangfu (北京小王府) and Dadong Kaoyadian (大董烤鴨店).
Some restaurants, in particular Quanjude and Bianyifang, have long histories of serving high quality duck that they are now household names, or "laozihao" (老字號), literally "old brand name".
In addition, Quanjude has received worldwide recognition, having been named a China Renowned Trademark in 1999.
Duck Chang's Restaurant, established in 1975 in Virginia, USA, was the first Chinese restaurant to prepare and serve Peking Duck without a 24 hour advanced notice. 
Quanjude (, ) is a Chinese restaurant known for its trademark Quanjude "Peking Roast Duck" and its longstanding culinary heritage since its establishment in 1864 in Beijing, China. 
Quanjude was established in 1864 during the Qing Dynasty under the reign of the Tongzhi Emperor.
Although Peking Duck can trace its history many centuries back, Quanjude's heritage of roast duck preparation - using open ovens and non-smoky hardwood fuel such as Chinese date, peach, or pear to add a subtle fruity flavor with a golden crisp to the skin - was originally reserved for the imperial families.
The first Quanjude manager, Yang Renquan, who started out selling chicken and ducks, paid a retired chef from the palace for the imperial recipe.
Soon after, Quanjude began to serve roast duck from the imperial kitchen to the common masses.
Yang Renquan opened his first, small Dejuquan (得聚全, the first two characters being reversed from the current name) inside Yangrou Hutong in Qianmen (前門), which at the time was one of the busiest areas in Beijing.
His restaurant became an instant success and has since grown into the current branch in Qianmen that employs over 400 staff members and can occupy 900 guests at one time.
The Qianmen restaurant, along with the many other Quanjude branches, together form one of the largest food enterprises in the nation. 
 In 1994, Quanjude was awarded the top brand in China's catering and restaurant business by World Brand Laboratory, ranking 56th overall out of the 500 most famed Chinese brands.
In 1999, Quanjude was awarded the title of "China Renowned Trademark," which was the only for the restaurant service industry.
In 1982, Quanjude was top ranked in the Chinese and Japanese publication, "Elite of Chinese Famous Dishes."
In 1958, Quanjude was ranked number one in "Chinese Famous Dishes" compiled by all-China famous chefs under the Ministry of Commerce of the People's Republic of China.