Hong Kong has become stronger and more competitive after its return to the motherland and is expected to be an international innovation and technology hub in the future, according to Jonathan Choi, chairman of the Guangdong-Hong Kong-Macao Greater Bay Area (GBA) Entrepreneurs Union. Choi said China's principle of "one country, two systems" has played a key role in supporting Hong Kong's development over the past 25 years since its return to the motherland.