Meituan started out as a Groupon copycat, but it eventually became one of the few Chinese coupon services (there were more than 2,000 such services in China at the time) with growing revenue and user base. Meituan was able to outgrow the copied model and reinvent itself. Today it is a major service provider, handling everything from movie tickets to restaurant reservations.
In a rapidly developing market, such as the Chinese one, many companies allow you to multiply your investments - the choice is quite large. The case with Meituan is notable not for the choice of an at least somewhat unique company for investment - it was not different in this - but for the fact that the main investor in the person of Sequoia Capital China made the right decision in time: prepared and carried out a merger with a competitor, thereby securing its investments.