Yes, it is an explicit strategic policy of the Chinese government as part of "Made in China 2025" with state support (political and monetary).
As we see, SMIC has already withdrawn from New York Stock Exchange entirely [1], and purchased a 7nm EUV lithography machine from ASML for $120 million [2]!
[1] https://www.scmp.com/business/article/3011737/chinas-biggest...
[2] https://www.anandtech.com/show/13941/smics-14-nm-mass-produc...