Classes of stocks according to the listing region: A shares: also known as RMB ordinary stocks, tradable shares, public shares, and ordinary shares. Refers to those ordinary stocks registered and listed in mainland China. Subscription and trading in RMB. B shares: also known as RMB special stocks. Refers to those special stocks registered and listed in mainland China. The face value is indicated in RMB and can only be subscribed and traded in foreign currencies. H shares: also known as state-owned shares, refer to the stocks of state-owned enterprises listed in Hong Kong. S shares: refer to the stocks of companies whose main production or operation and other core businesses are in mainland China, and the company is registered in Singapore (Singapore) or other countries and regions, but is listed on the Singapore Exchange. N-shares: 1. The sign of the first day of listing of new IPO shares (the warning symbol on the first day of listing of the stock after the IPO, and the normal name of the stock will be restored on the second day); 2. Refers to those registered in mainland China and in New York (New York) Listed foreign shares. Blue chip stocks: In the stock market, those large company stocks that occupy an important dominant position in their industry, have excellent performance, active transactions, and generous dividends are called blue chip stocks. R shares: I haven’t encountered this before, so I don’t know.