Looks like Seattle is getting Shenzhen service before Vancouver, sigh
"Skyteam member Xiamen Airlines last week has opened reservation for its new service to the US, which sees the airline operates Xiamen – Shenzhen – Seattle route. From 26SEP16, the airline will operate Boeing 787-8 aircraft on this route, 3 times a week. Reservation is available in the GS at time this post goes to press.
MF845 XMN0930 – 1045SZX1245 – 1025SEA 787 135
MF846 SEA1325 – 1815+1SZX2015+1 – 2125+1XMN 787 135"
http://airlineroute.net/2016/05/02/mf-sea-sep16/