Cuba is the only socialist country currently. Maybe North Korea if you close one and a half eyes. China has long gone capitalist.

China also self-identifies as a socialist state - like Laos and Vietnam. No need to hurt their feelings.

They don't. Official ideology is that they a going through a temporary capitalist phase and will switch to socialism once they developed enough to do so.

Obviously they wont. It was just a tactic to avoid the chaos of the fall of the Soviet Union while still changing out the economic system. Keeping political stability while allowing the people in power in enrich themselves thanks to capitalism.

Q: What does the CCP think about that?

A: We respond that socialism with Chinese characteristics is socialism

Full quote: Some have called our road "Social Capitalism", others "State Capitalism", and yet others "Technocratic Capitalism". These are all completely wrong. We respond that socialism with Chinese characteristics is socialism, by which we mean that despite reform we adhere to the socialist road – our road, our theory, our system, and the goals we set out at the 18th National Party Congress. ... Socialism with Chinese characteristics is the dialectical unity of the theoretical logic of scientific socialism and the historical logic of China's social development. It's scientific socialism rooted in Chinese realities, reflecting the will of Chinese people, and adapted to the requirements of China and its circumstances. — Xi Jinping, speech to the Central Committee of the Chinese Communist Party, 5 January 2013[5]

Q: What does the Constitution say?

A: Article 1 The People's Republic of China is a socialist state under the people's democratic dictatorship led by the working class and based on the alliance of workers and peasants. The socialist system is the basic system of the People's Republic of China. Disruption of the socialist system by any organization or individual is prohibited.

From the preamble: After the founding of the People's Republic, China gradually achieved its transition from a New-Democratic to a socialist society. The socialist transformation of the private ownership of the means of production was completed, the system of exploitation of man by man abolished and the socialist system established. [...] China will be in the primary stage of socialism for a long time to come.

You have to read between the lines with those things. Note that "adhering to socialism" is not the same as having a socialist economy. Also being on the "socialist road" implies a process, not that they are already there. Also you left out an important part in your first quote

> and the goals we set out at the 18th National Party Congress. This includes building a socialist market economy;[..]

You might as well translate "socialist market economy" as capitalism with red flags. There is no market economy under socialism, that is the whole point.

No one in their right mind thinks China has a socialist economy. These people have decades of experience twisting ideology to whatever they want to do. Though Xi is whole bit less liberal than his predecessors. Some do argue that he plans to bring China back to a more socialist course but I am not sure about it. Personally, I think the growing socialist rhetoric is mostly a reaction to the growing wealth inequality and other problem in China.

When the first words in the first article in their constitution state that

> The People's Republic of China is a socialist state

it seems warranted to say that China self-identifies as a socialist state.

You're of course free [*] to say that China does not self-identify as a socialist state. I don't particularly care.

[*] As long as you don't put that in a banner in Tiananmen Square, I guess.