Eeehm you forgot that China no longer supports this Blockchain of a thing and have even banned everything that has to do with the Blockchain and cryptocurrency… or am I wrong? That’s what I know. Line is making use of the Blockchain, but WeChat already has a system integrated in it that allows users to send and receive payments right from the app and that is called WePay, maybe you should check it out. This WePay is already popular among WeChat users and I don’t think they will have any plans to addany other thing to it.. Unless their government happens to lift the crypto ban, then they might decide to go for it.