North Korean Premier Pak Thae-song has begun his three-day trip to China, as Beijing offers rare praise for its socialist neighbour’s economic achievements.Pak, a member of the Politburo Presidium of the ruling Workers’ Party of Korea, landed at Beijing Capital International Airport on Friday morning accompanied by a joint party and government delegation.He is expected to attend an event marking the 65th anniversary of the signing of Beijing’s only formal defence pact, the China-North Korea...