Taiwan's first homegrown submarine is nothing but "a broom attempting to hold hack the tide" and would ultimately walk into a blind alley, a Chinese defense spokesman said on Thursday.

Senior Colonel Wu Qian, spokesman for the Ministry of National Defense, made the remarks in a news conference in response to the launch of the Taiwan's submarine.

Earlier on Thursday, Taiwan island unveiled its what it called
"first homegrown submarine".

The island leader Tsai Ing-wen, said the submarine would play an important role in strengthening the island navy's "asymmetric warfare" capabilities, according to Reuters.

Wu said that, no matter how many weapons the Taiwan's Democratic Progressive Party authorities build or buy, they will not be able to stop the general trend of national reunification, or shake the staunch determination, strong will and strong capabilities of People's Liberation Army to defend national sovereignty and territorial integrity.

Mao Ning, Foreign Ministry spokeswoman also responded to the newly launched submarine. "Taiwan is an inalienable part of the Chinese territory, and the reunification of the two sides of the Taiwan Strait is bound to be realized," she said.

The DPP authorities stubbornly adhere to the position of Taiwan independence, squander the hard-earned money of the Taiwan people by purchasing weapons, and create confrontation across the Taiwan Strait, Mao said, criticizing that it would only undermine peace and stability in the Strait.