An "I love Lingshan Island" sign is a popular photo spot on the island. CHINA DAILY

Visitors are also encouraged to take part in low-carbon living. A digital platform rewards actions such as waste sorting, green travel and reducing food waste with points that can be exchanged for daily goods.

Meanwhile, new growth drivers are emerging. The island is experimenting with low-altitude logistics, including drone delivery routes linking it with the mainland, while expanding marine tourism offerings such as coastal cruises and short island tours, said Zhang Jiatang, head of the economic development office of the reserve's management committee.

Financial innovation is also supporting development. Qingdao's first ecological asset-backed loan, worth 10 million yuan, and an 800,000-yuan green credit line for homestays have helped turn environmental assets into usable capital.

Yin Honglei, director of the reserve's management committee, said the island will continue to prioritize ecological conservation while further diversifying its businesses in an environmentally friendly way.

The goal is to keep the waters clean, the hills green and local livelihoods growing, showing how protection and development can move forward together, she added.