An Initial Public Offering (IPO) occurs when a private company offers shares to the public for the first time. Mixue Group, a leading bubble tea chain in China, recently launched its IPO on the Hong Kong Stock Exchange. - Mixue Group's shares rose nearly 30% on their first day of trading in Hong Kong. - The company raised $444 million through its initial public offering (IPO). - The IPO is considered Hong Kong's biggest of the year, fueling optimism about the revival of Hong Kong's IPO market. - The demand for Mixue's shares was heavily oversubscribed, with mom-and-pop investors bidding for thousands of times the shares available.