What app was banned in China?

Recently, there has been much buzz surrounding the banning of a popular app in China, sparking widespread debate and speculation among the crypto and finance community. Could you elaborate on the specifics of this ban? What app was it that faced such strict measures in the Chinese market? Was it a cryptocurrency trading platform, a digital wallet, or perhaps a payment gateway? How might this ban affect the overall landscape of crypto and finance, not only in China but also globally? I'm eager to understand the implications and potential ripple effects of this development.