August 15, 2019: Protests in Hong Kong continue to escalate as they enter their tenth week. What started as a protest against an extradition bill has expanded into a widespread movement that has at times turned violent, leading several countries to issue travel warnings. Hong Kong, which is part of China, has a much more open economy and political system than the mainland, under a system of "one country, two systems." However, that is being tested as Beijing seeks to exert more control over Hong Kong. Plus, learn the English phrasal verb "let up."