In April 2021, Xu Tiantian and her office DnA_Design and Architecture were invited by the local authority of Jinyun County to develop ideas for the conversion of former quarries. Those responsible had become aware of Xu Tiantian through her recent involvement in the neighbouring county of Songyang, where using a strategy that she describes as ‘architectural acupuncture’ her projects brought new life to old villages with comparatively little intervention.