From the Hong Kong town of Ma On Shan. The stamp on the left shows the small island Po Pin Chau on the eastern edge of Hong Kong. And the two on the right are 2022 stamps from a set commemorating the third anniversary of the ambitious Guangdong-Hong Kong-Macao Greater Bay Area Outline Development Plan. The goal is to integrate these cities around the bay into one large business hub. The area already accounts from something like 12% of China's GDP and 37% of the country's exports.