What the TICS data for March do show is:
1) Private inflows rose from US$ 149bn in February to US$ 254bn in March
2) Official net inflows were flat on the month..
3) China's holdings of US Treasuries ended March at US$ 765.4bn down from US$ 784.3bn in February. China's total holdings of US Treasuries are now in third pace behind Japan US$ 1,130.8bn and the UK US$ 779.3bn. An analysis I did last week indicates that China only sold about US$ 126 bn of US Treasuries in the last two years. Hardly a frontal political attack on the US!!!! But there are plenty of Chinese holding of US Treasuries that do not appear here (e.g. commercial bank holding & holding held through Luxembourg etc). So it could still happen.