15. http://www.newconcept.com New Yi Chinese school - the religion Chinese of Chinese Phonetic Alphabet of simplified Chinese character , just skill, in weekend , lesson rear class and the whole day of summer camp, set up 5 to divide into school. (新意中文学校)
16. http://www.chinabaisi.com self -counfident to talk in public to train - Guangzhou 100 think the speech and eloquence of business management of referral center train and train talk in public. (自信当众讲话训练)
17. http://www.webcom.com/ocrat/voa Through Voice of America , study Chinese ( Study Mandarin Chinese using VOA ) (通过美国之音学习汉语(Study Mandarin Chinese using VOA))
18. http://icg.fas.harvard.edu/~pinyin Chinese speech sound practises guide ( Chinese PronunciatiGuide ) - Harvard produce. Chinese speech sound trains and introduces and course. (汉语语音练习指南(Chinese Pronunciation Guide))