If you look at the data, the average *daily* trading volume of the treasury securities via just one platform is already above $1 trillion (https://www.tradeweb.com/newsroom/monthly-activity-reports/), while the *total* holding in treasuries by China is about $1 trillion (https://ticdata.treasury.gov/Publish/mfh.txt).

It would be helpful if you could provide sources that specifically analyze the effects of China dumping treasuries on economic fundamentals. My guess is that the market can relatively easily absorb the impact.