International

a talk,  Winter School on Field Theories, Schladming,  Austria,  
supported by the school,                
Mar. 3-12, 1990;   

a talk,   workshop on Fermion algorithms, Juelich, Germany,  
partially supported by the workshop,                
Apr. 10 -12, 1991;

Invited in workshop on Lattice gauge theory,  Vienna, Austria,  supported by DFG,                
Sep. (one week), 1992;

Invited in workshop on STANDARD MODEL and BEYOND,   Bad Honnef, Germany,  
supported by the workshop and DFG,                
Mar. (one week), 1993;

Summer School on Field Theory and Particle Physics,   Sicily, Italy,               
July. 4 - 13, 1993;

Meeting of German Physical Society,   Mainz, Germany,  supported by DFG,               
Sep. (one week), 1993;

International Conference on Particle Physics,   Hanoi, Vitnam,                
Jan. (one week), 1994;                

Invited talk in workshop on NONEQUILIBRIUM PHYSICS at SHORT TIME SCALE, 
Rostock Univ., Rostock, Germany,  supported by the workshop,               
Jan. (one week), 1995;

a talk, Winter School on Field Theories,  Schladming, Austria,   
supported by the school,                
Mar. (one week), 1995;

a talk, XIVth International Symposium on Lattice Field Theory,  Saint Louis, USA,                
June (one week), 1996;

Invited in a workshop on statistical mechanics,  Bad Honnef, Germany,  
supported by the workshop,   
Oct. (one week), 1996;

a talk, International Conference on Computational Physics,  Granada, Spain,          
August. (one week), 1998;

Middle European Conference on Statistical Physics,  Wittenberg, Germany,                
Feb., 1999;

Invited speaker in WORKSHOP on NONEQUILIBRIUM DYNAMIC SYSTEMS,  
Porto Univ., Porto, Portogal, supported by Porto Univ.,                
Jun. 7 to 11, 1999;                

Invited speaker in Conference LAWNP'99,  Cordoba Univ., Cordoba, Argentina, 
supported by LAWNP'99 and DFG,
Oct. 12 to 16, 1999;

Invited Talk,  Workshop on Computational Physics,  Leipzig, Germany,  supported by Janke,    
Dec. 13, 2001;

Invited speaker,  
5th International Conference on Monte Carlo and Quasi-Monte Carlo Methods in Scientific Computing,  
Singapore,   invited by J.S. Wang,                
Nov. 25-28, 2002;

Invited Talk,  
Workshop on Recent Developments in Computer Simulation Studies in Condensed Matter Physics,  
Athens, USA,  invited and supported by Landau,                
Feb. 24-28, 2003;

Invited talk,
4th OCPA Joint Meeting of Chinese Physicists World-Wide
Shanghai,
June 28-July 1, 2004

Invited Talk,  
Workshop on Recent Developments in Computer Simulation Studies in Condensed Matter Physics,  
Athens, USA,  invited and supported by Landau,                
Feb. 16-20, 2004;

Invited talk,
Markov Chain Monte Carlo: innovations and applications in statistics, physics and bioinformatics
Singapore,   invited by the conference
March 22-27, 2004

Invited talk,
Workshop on Computational Physics
Tokyo,
Feb. 15, 2005

Invited talk,
Recent Progress in Computational Science
Hongkong,
Dec. 6 - 13, 2005

Invited talk
Annual meeting of computational physics
Korea
Aug. 19 - Sep. 1, 2006

Invited talk,
5th OCPA Joint Meeting of Chinese Physicists World-Wide
Taipei,
June 27-June 31, 2006

Invited talk
8th Taiwan International Symposium on Statistical Physics
Taipei,
June 22-June 26, 2006

National

Invited talk,
Conference in statistical physics
Yangzhou,
Aug. 25-29, 2003

Invited talk,
Autumn meeting of Chinese Physical Society
Hefei,
Sep. 18-21, 2003

Invited talk,
Workshop on Monte Carlo methods in scientific computing
Beijing,
Nov. 3-7, 2003