You are in Nanjing. If your household registration is in Jiangsu province, you can find Jiangsu CTS or Suzhou CTS. These two companies can do it. The tour fee is between 10000- 15000. The cost of arriving in Taiwan Province Province is not included.
As for the places worth visiting in Taiwan Province Province, it's not up to you. It depends on the itinerary of the travel agency, and you can't go if you want. It may not sound good, but it's all true.
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In addition, the official statement is that there is no self-help tour, but the actual situation is that some people go to Taiwan Province for self-help tour through non-governmental channels, and the cost is similar to that of tour groups, depending on how you spend money in Taiwan Province Province.