It's not enough just to stimulate consumption, but it needs to be the right kind of consumption by the right kind of people, namely families. I don't want my social media filled with wretches enjoying a wonderful child free lifestyle while families struggle. It really ought to be the other way round.
People aren't going to buy stuff without a large enough home to put stuff in. We want families to have big homes to fill with children, elderly and more stuff. Huge potential source of domestic consumption when people aren't living in tiny 40m² apartments.
The cost of housing is mostly concrete and artificial scarcity anyway. Make car and housing subsidies for families permanent, and funded by car and property taxes on adults without children. Nice cars should be for people with families, two wheelers for people without. I'm dislike seeing an entire family of 4 riding on one moped.
China needs more public baby changing rooms.
I'm in favour of conscripting childless women to keep public toilets clean. Not because we need the labour but establish social "status" and reduce discrimination to blue collar workers. They can still clean toilets in their LV and Gucci rags of course, but it's harder for them to look down on blue collar men while doing do.
I very much agree housing is the single biggest issue here, it is the most important thing to consider in raising a family in China. I think we're at a point where the government must consider providing large quantities of public housing for couples with kids as an incentive.
You said it right cost of housing is artificial scarcity, time to remove it. It would be the first step towards full communism.
My thinking on consumption is that Chinese aren't really under consuming, people are buying stuffs but stuffs are way too cheap so overall consumption seems low. I mean look at the stuffs you buy on Taobao, things aren't supposed to be THAT cheap lol.
This is another problem that can be solved by mass public housing projects. By providing cheap homes it will release people's purchasing power so they're willing to spend more on buying manufactured goods, more profit margin for companies, higher wages so on so forth. A positive feedback loop on the part of economy that really matters.
All in all, fuck the real estate market.