Beijing’s top official overseeing Hong Kong affairs has concluded his second visit to the Greater Bay Area in three weeks, a trip that analysts view as a push from the central government to speed up the city’s integration with national development. Xia Baolong, director of the State Council’s Hong Kong and Macau Affairs Office, was in Guangdong province earlier this week, visiting Shenzhen, Dongguan and Huizhou. State-run media said his four-day “research tour” focused on supporting Hong Kong...