Hopes for a new China commitment to buy Boeing planes are sinking ahead of a September 24 summit between the US and Chinese presidents, two people briefed on the matter said, with negotiations still in flux ↧ Hope fading for new Boeing deal during US-China summit, sources say Hopes for a new China commitment to buy Boeing planes are sinking ahead of a Thursday summit between the US and Chinese presidents, ‌two people briefed on the matter said on Wednesday, with negotiations still in flux.