H-Shares refer to shares of companies from mainland China that have been listed on the Hong Kong Stock Exchange. This is part of the Chinese government's efforts to open up their market to foreign investors. These stocks are denominated in Hong Kong dollars and are subject to different regulations and trading processes compared to A-Shares, which are listed on the Shanghai and Shenzhen Stock Exchanges. As a knowledgeable finance professor, I believe it is important to understand these distinctions in order to make informed investment decisions.