Beijing’s top official for Hong Kong affairs is “very confident” about the city’s “high-quality development,” Chief Secretary Eric Chan has said as the politician began his week-long Hong Kong visit. Xia Baolong, the director of the Hong Kong and Macao Affairs Office (HKMAO), arrived in Hong Kong on Thursday. The visit is intended for Xia to understand Hong Kong’s economic development and district administration matters, according to a HKMAO statement. Xia’s first stop in the city was the Hong Kong International Airport, where he visited its command centre. He then attended two “engagement ses…