When I came to the Hong Kong Monetary Authority, I learned that Hong Kong banknotes were issued by three banks - "Standard Chartered Bank, Bank of China and HSBC Bank. Only then did we understand the anti-counterfeiting features of Hong Kong's 1000 yuan banknotes and 10 Yuan plastic banknotes. Standing at the window of the 55th floor and looking out, the once unattainable Yihe Building seems to be approaching a lot.