Air Canada's round-trip sale rate of <STRONG>$800</STRONG> to <STRONG>Beijing</STRONG> or <STRONG>Shanghai</STRONG>, China is valid on September 15-December 3 or December 27-March 31, 2014 departures (complete travel on or before March 31). Add $30 per direction for Thursday-Sunday travel. No minimum stay required; six months max. Purchase by <STRONG>September 10</STRONG>. Routing is via Toronto. Stopovers permitted at an additional $150 per stop.