For years after it took control of Hong Kong from Britain, China kept its military in the city on a low profile. Its presence was largely symbolic and People's Liberation Army troops were rarely seen outside their main barracks in Hong Kong's Central district or other smaller facilities across the territory. But, 20 years after the handover, the Chinese military garrison here is taking on a more active role, according to a recent article in a Communist Party journal, with the PLA conducting drills and war games in the territory.