用方框中所给单词的适当形式填空，每词仅用一次(每空一词)。

Tai chi (太极) has always been a symbol of Chinese culture and is becoming popular around the world. Over 100 million people in more than 150 practice tai chi nowadays.

One thing that makes tai chi popular is its health benefits. As you move, you breathe deeply and and pay your attention to your body. This you relax and find peace in the heart. Tai chi also focuses on harmony(协调) yin and yang. For example, if you work too hard and feel tired, you have too much "yang". So it's time for you to calm down and get more "yin?". This idea of keeping a healthy balance(平衡) can be found on almost in life. It makes tai chi far more than just a sport.