Open this photo in gallery: Peter Yuen, Liberal candidate for Markham-Unionville, attends a campaign event at Kennedy subway station in Scarborough, Ont., on Jan. 31.Laura Proctor/The Canadian Press A Liberal candidate running in a Greater Toronto Area riding, whose candidacy has come under scrutiny for ties to pro-Beijing groups, accepted an invitation from China to celebrate the 70th anniversary of the People’s Liberation Army victory over Japan in the Second World War. Peter Yuen, who has also been linked to Toronto’s Chinese consulate, joined a group of about 70 Chinese Canadians for the Tiananmen Square celebration in September, 2015. The...