Free of charge if you study Chinese out of personal interest, and I don't need to travel. If you need to prepare for a test or do business, we can negotiate about the price. I am a native speaker of Mandarin Chinese, and I also speak Lower Yangtze River Mandarin, and Cantonese. I am willing to teach Chinese for English speakers in terms of basic speaking, reading and writing; teaching songs, recommending books, providing translation and auditing, and help on technical documents in engineering fields. I will also be willing to talk about history of east Asia if that is your interest.