Xiaohong, Chen. “Sustainable Horizons: Raising the Bar for Environmental Health With Rural Sewage Network Upgrades in Xiamen”. Ayden Journal of Engineering and Applied Sciences 1, no. 1 (February 29, 2024): 56–61. Accessed August 23, 2025. https://aydenjournals.com/index.php/AJEAS/article/view/123.