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Tang Zhenhua, founder of Tiantong: "At present, the thinking ability training industry is facing many challenges. First, the number of top talents in the industry is relatively limited and there is a shortage of good teachers. Second, the good and bad products are intermingled, but ordinary consumers lack the ability to distinguish, leading to the expulsion of good ones from bad ones. Third, giants enter and crush start-up organizations with large resources. Fourth, the uncertainty of policies; Fifth, the cost of acquiring customers continues to rise. "干净舒适的街道，关心他人的人们…。讲述了个性积极进取的30代女性，整理了与恋人的爱情长跑后，迎来全新的爱情的故事。积极进取且热情的30代女性整理和恋人的爱情长跑，迎来全新的爱情的过程的故事。某个春日，悄悄来到两个男女身边的令人心动的爱情。After listening to something wrong, he said that the ship broke down and the submarine main valve was opened. Only Wang Yanlong knew where the main valve was. At that time, the water was flowing very fast. There was a pump that pumped out all the water. After the whole system was adjusted, it was not easy to work.2/threat