On Oct.10, retired teachers of the Minzu University of China visit the "Beauty of Tibet" painting exhibition at the National Center for the Performing Arts in Beijing. They are going to perform "Missing Tibet" in a few hours on the stage of the Center to celebrate the Senior Citizens' Day, a traditional in China on the ninth day of the ninth month on lunar calendar, which fell on Oct. 13 this year.[Photo/China Tibet Online]

On Oct.10, retired teachers of the Minzu University of China visit the "Beauty of Tibet" painting exhibition at the National Center for the Performing Arts in Beijing. They are going to perform "Missing Tibet" in a few hours on the stage of the Center to celebrate the Senior Citizens' Day, a traditional in China on the ninth day of the ninth month on lunar calendar, which fell on Oct. 13 this year.[Photo/China Tibet Online]

On Oct.10, retired teachers of the Minzu University of China visit the "Beauty of Tibet" painting exhibition at the National Center for the Performing Arts in Beijing. They are going to perform "Missing Tibet" in a few hours on the stage of the Center to celebrate the Senior Citizens' Day, a traditional in China on the ninth day of the ninth month on lunar calendar, which fell on Oct. 13 this year.[Photo/China Tibet Online]

On Oct.10, retired teachers of the Minzu University of China visit the "Beauty of Tibet" painting exhibition at the National Center for the Performing Arts in Beijing. They are going to perform "Missing Tibet" in a few hours on the stage of the Center to celebrate the Senior Citizens' Day, a traditional in China on the ninth day of the ninth month on lunar calendar, which fell on Oct. 13 this year.[Photo/China Tibet Online]

On Oct.10, retired teachers of the Minzu University of China visit the "Beauty of Tibet" painting exhibition at the National Center for the Performing Arts in Beijing. They are going to perform "Missing Tibet" in a few hours on the stage of the Center to celebrate the Senior Citizens' Day, a traditional in China on the ninth day of the ninth month on lunar calendar, which fell on Oct. 13 this year.[Photo/China Tibet Online]

On Oct.10, retired teachers of the Minzu University of China visit the "Beauty of Tibet" painting exhibition at the National Center for the Performing Arts in Beijing. They are going to perform "Missing Tibet" in a few hours on the stage of the Center to celebrate the Senior Citizens' Day, a traditional in China on the ninth day of the ninth month on lunar calendar, which fell on Oct. 13 this year.[Photo/China Tibet Online]

On Oct.10, retired teachers of the Minzu University of China visit the "Beauty of Tibet" painting exhibition at the National Center for the Performing Arts in Beijing. They are going to perform "Missing Tibet" in a few hours on the stage of the Center to celebrate the Senior Citizens' Day, a traditional in China on the ninth day of the ninth month on lunar calendar, which fell on Oct. 13 this year.[Photo/China Tibet Online]