The first time attend the congress of the Union International Concierge Hotel Les Clefs d'Or: April 1990, Mr.Lin Wenjie , Mr. Li Huiguang, and Mr. Xiao Yuanhui from The White Swan Hotel attend the foundation congress of the Les Clefs d'Or Asia hosted in Singapore.
The first U.I.C.H member from China: At the end of 1992, Mr. Ye Shihao from The White Swan Hotel become the first U.I.C.H member from China.
The first time attend the Annual congress of the Union International Concierge Hotel Les Clefs d'Or: December 1993, Mr. Lin Wenjie, Mr. Sun Dong and Mr. Lin Zhizhao attend the 41th Annual congress of the Union International Concierge Hotel Les Clefs d'Or hosted in Singapore.
The first time attend the training seminar of golden key service theory: June 1994, Mr. Sun Dong accept the training named the service and management of concierge which hosted in the Cornell University.
The first union of the concierge from Guangzhou: October 1994, Mr.Sun Dong invite the chief concierges from the five stars hotel in Guangzhou to reach an agreement of cooperation. which is the foundation of establishing the Les Clefs d'Or China.
The first time to spread the theory of golden key service: March 1995, Mr. Sun Dong become the membership of the U.I.C.H. The 1st congress Les Clefs d'Or China is hosted in The White Swan Hotel in Guangzhou, the topic is "the golden key toward 2000", Which is the symbol of the fundation of the Les Clefs d'Or China. The 2nd congress Les Clefs d'Or China is hosted in the Peninsula Palace Beijing
January 1997, the Les Clefs d'Or China become the 37th membership country of the U.I.C.H. July 1997, The 3rd congress Les Clefs d'Or China is hosted in Nanjing, in this meeting, the Les Clefs d'Or China put forward a slogan "Friendship Cooperation and Excellent service".
May 1998, the golden key service is accepted as the standard of evaluation of hotel star-rating. November 1998, The 4th congress Les Clefs d'Or China is hosted in Dalian.
January 16-21 2000, the 47th Annual congress of the Union International Concierge Hotel Les Clefs d'Or(U.I.C.H) hosted in Guangzhou.
Headquarters of Les Clefs d'Or China