Shenzhen has emerged as one of the most successful cities in China, with a high standard of living and a strong economy. However, there have been concerns that the city could slip back into the relegation zone if it doesn't improve its performance.

One of the main reasons for this is the city's reliance on heavy industry, which has led to environmental degradation and pollution. This has resulted in a decrease in the city's population, leading to overcrowding and displacement of residents.

To address these issues, Shenzhen has implemented several measures to promote sustainable development and reduce pollution. For example, the city has invested heavily in renewable energy and green infrastructure, such as bike lanes and pedestrian walkways, to reduce traffic congestion and air pollution.

In addition, the city has also focused on improving education and healthcare services, particularly in rural areas, to ensure that all citizens have access to quality care.

Despite these efforts, however, Shenzhen still faces challenges. The city continues to struggle with housing shortages, especially in low-income neighborhoods, and there is a growing concern about rising property prices. These factors have made it difficult for the city to attract investment and create jobs, further exacerbating poverty and inequality.

As a result, Shenzhen has had to take action to address these issues and lift itself out of the relegation zone. In order to do so, the city will need to invest more in public transportation and green infrastructure, while also working to improve education and healthcare services. By doing so, the city can continue to grow and thrive, even in the face of continued challenges.