Still the same thing to me. Boeing needs 'parts' from other nations to keep it 'flying' or if it can keep flying by itself, why don't they do it?Tone down the emotions, kid.
The Boeing equivalent of the C919 (namely, the 737) sources the majority of its parts from US-based or US-owned companies, much of them manufactured directly in the United States. Critically, the engines (the most expensive and crucial part of the aircraft) are mostly developed and built within the US.
See here:
The C919, on the other hand, is almost completely built from non-Chinese components, including the engines. The only "Chinese" portion of the C919 remains limited to the wings, horizontal stabilizers, radar cover, and outer fuselage. All of the internal subsystems, such as avionics and flight control, are non-Chinese. Even the landing gear is not Chinese.
COMAC is just starting off, and heads off to the Chinese that they were able to form together a coalition for their first large commercial plane despite some people or nations ( eg. Sinosoldier) efforts to spoil it. Go China.