[1] China’s administrative punishments law. Note the inclusion of 行政拘留 under 第九条.
[2] the carceral outcomes of China’s social credit system.
[3] An overview on Baidu of how party members can be held extrajudiciously. Baidu is basically just the Chinese equivalent of Google but they have their own sources cited.
[4] the administrative litigation law outlining the process of claiming compensation for personal acts.
If you happen to be in the US, better to make those sorts of purchases now before prices go up under tariffs.