In an eerie, unfinished village of pink and blue fairytale houses in Eastern China, billboards can be found advertising Evergrande's once ambitious plans to build a tourism empire bigger than Disney. The derelict amusement park is among the 800 development projects and scores of vacant homes across China abandoned after the world's most indebted property developer collapsed two years ago. As liquidators take over the debt-ridden property giant, which owes more than $300bn to banks and bondholders, critics now question who should take responsibility for Evergrande's downfall. According to claims in anonymous letter shared on Chinese social media platform WeChat last week, questions surround the role of Evergrande's former auditor: PwC. The open letter, which purports to have been signed by unnamed PwC partners, claimed the professional services firm "turned a blind eye" while auditing Evergrande for more than a decade.