HONG KONG—China Evergrande Group said on Friday it sold stakes and “right to debt” in four developments to two state-owned trust firms for 2.13 billion yuan ($337.35 million), in a move to ensure their construction goes ahead as well as delivery of its other projects. The world’s most indebted property developer is struggling to complete projects and homes while weighed down by its more than $300 billion in liabilities. Evergrande said it sold its stake and right to debt in a residential development in Chongqing and Dongguan to Everbright Trust for 1.03 billion yuan, as well as those in a housing project in Foshan and a theme park development in Guangzhou to Minmetals Trust for 1.1 billion yuan. The right to debt means the buyers take on debt linked to the project. The trust firms are part of China’s so-called shadow banking sector. The trust firms will be responsible for …