Taiwanese companies that invested in China say they are being squeezed by corrupt officials and unfair courts, with no way to get help — bad news for anyone still doing business across the strait.

• Taiwanese business owners who lost money in China have formed a new joint association to press their cases together.
• They want Xi Jinping to order China's top court to create a dedicated unit for handling Taiwan-related business disputes.
• Before 2016, Beijing and Taipei reviewed these cases together every three months; that channel died when relations froze.
• Foreign companies in China can lean on their embassies, but Taiwanese firms have no one, which the group says lets local officials push them around.
• The group puts most of the abuse down to corrupt local power brokers and wants Xi's anti-corruption drive aimed at these cases.

Outlook: With cross-strait talks still frozen, the appeal is unlikely to get a response soon, and more Taiwanese firms will probably think twice about investing in China.