Calm down ... with the WS-20 the C919 will surely be able to fly but it takes times, money and even more with the WS-20 it won't reach its performance parameters since it is an older generation engine. As such, to be competitive, they need to wait for the CJ1000A
People are calm.
And involvement of all those foreign parts was a mistake. China hoped to gain some market share in EU and USA by using these parts to instill some confidence and increase ease of access to spare parts for end users. However, this was futile. COMAC is blacklisted and FAA will not give any certificate to a Chinese airplane in this surreal political environment.
As Y-20 proves, almost all subsystems in C919 can be produced in China one way to another and focusing on these is better than trying to integrate foreign subsystems. COMAC should not repeat Huawei's mistakes.