Wang Huning's neoconservatism is fundamentally anti-Marxist and I much prefer Overseer Ma's take: family as a basic social unit is simply a product of the Industrial Revolution and it will fade away as means of production advance just like the old clan structure faded away as a result of the Industrial Revolution. There is nothing natural or fundamental about families.
The correct path forward is not trying to hold onto social arrangements of the past but to embrace social changes bought on by new means of production. In particular childcaring and education should be socialized. Reproduction too. Spend a few hundred billion dollars on researching artificial wombs. That's the way to halt population decline. China is a socialist country, so embrace a socialist future where the society will take care of the whole process from reproduction to education. People of the future will not have mother or father, they will only have the motherland, which will be perfectly fine.
I disagree, the family unit is the most important immediate unit/team/cell of society; children, even adult children will naturally defer to their elders and the paterfamilias or patriarch of the family, even in 'individualistic' anglo societies where rich families defer to the rich patriarch. Look at how Trump's family will still defer to him even if they disagree with him, and he's hardly a conservative christian religious type.
China's Confucian/Taoist family ties and relationships are a strength and the CPC are wise to utilise that strength of Chinese culture; Chinese people are motivated by providing the best for their families, for their parents, filial piety is deep and runs strong even in westernised christian asian families- in fact, i'd see christianity as perverting the Confucian system of relationships with the aim of placing a white man (jesus figure) into the Chinese family as its Godhead, over the family's patriarch/matriarch.
Secondly, your vision of a society is Utopian, and i mean that in the original meaning of the word, from Thomas More's
Utopia; plenty of radical political scientists have hoped to achieve utopia by destroying the family in favour of communal, egalitarian structures. This is unrealistic and ignores basic human instinct; More hoped that doing so would prevent corruption but what one sees as corruption can also be viewed as a necessary evil to get shit done, over bureaucratic red tape, to achieve goals.
The Brave New World that is anglo-western society which attempts and even succeeds at destroying the family as a structured social unit merely invites desire for structure of another form: fascism as we see in the Lost Boys of the west who join White Nationalist groups.