Please explain the disadvantages of the traditional extensive growth model.

The so-called "extensive economic growth mode", first, the overall level of industrial structure is not high enough: the manufacturing structure between cities is close, and the leading industries are similar, leading to repeated investment and excessive competition in some industries; The proportion and level of added value of modern service industry are generally low. Second, the ability of technological innovation is not strong: the transformation of scientific and technological achievements and technological innovation are insufficient, and the core technology and its application ability are lacking; The construction of international manufacturing base is still in the stage of assembly and has not yet become a manufacturing base supported by research and development; High-tech is introduced more than digested and updated, and there are few powerful industries and enterprises with independent intellectual property rights. High-tech products are mostly at the low level of "three supplements", with low added value and low export benefit. Third, economic development is not in harmony with resources and environment: the secondary industry with high energy consumption and high pollution accounts for a high proportion of the national economy, which leads to tight supply of resources and intensified environmental pollution, which directly affects the investment environment and sustainable development.