China issued new rules to block its companies and citizens from having to follow ¡°unjustified¡± foreign laws and measures, in its latest riposte to U.S. restrictions on businesses like ByteDance Ltd.¡¯s TikTok.

The rules on ¡°counteracting unjustified extra-territorial application¡± of foreign legislation and other measures are effective immediately and allow authorities to ban the imposition of other jurisdictions¡¯ laws on Chinese entities when it deems them inappropriate, the Ministry of Commerce said in a statement on its website on Saturday. China¡¯s move aims to protect ¡°normal trade¡± and other activities, it said.

The new order will be enforceable in China but it will be difficult to use for activities outside of the country, Nicholas Turner, a lawyer at Steptoe & Johnson LLP in Hong Kong who specializes in economic sanctions, said Saturday.