The development of foreign investment economy and Hong Kong, Macao and Taiwan economy within a certain range is of great significance to strengthen China's modernization. It can make up for the relative shortage of funds and build a number of urgently needed projects in the national economy. We can introduce advanced technology and scientific management methods to improve China's production technology and economic management level. It can increase national and local fiscal revenue and accumulate construction funds. It can also expand employment, improve people's living standards, expand exports and increase foreign exchange income.
the central idea of the above paragraph?
To develop foreign investment economy and Hong Kong, Macao and Taiwan investment economy within a certain range can increase fiscal revenue.