Taiwan’s local industries have a profound impact and development, preserving cultural memories and promoting social connections with local identity. For example, Guantian’s ff caltrop industries upgrade the water caltrop into environmentally friendly products. They combine exhibitions with public visits, giving traditional culture a new lease of life and expanding the culture of residents to the world. Meanwhile, these industries became an important platform for ethnic exchanges, narrowing the distance between different cultures. Local industries can not only demonstrate the depth of Taiwanese culture but also find a balance between economics and humanities, becoming a model of sustainable development. 

Moreover, through the annual ”Water Caltrop Cultural Festival”, Guantian combines local agriculture with cultural festivals to attract tourists to experience traditional techniques and further promote innovation in local culture. The success of Guantian Black Gold has increased the market value of water caltrop shells and made local resistance increasingly proud of “Black Gold”, developing a virtuous circle in culture and economy. 

The connection between Guantian Black Gold's biochar and local industries is by contributing to solving limited resource problems and developing sustainability. The local community of Guantian, Tainan, has developed a significant water caltrop industry; however, the industry has gradually faced a downturn in the past decades. Biochar had to convert local low-value waste into high-value resources. This new strategy has not only solved the environmental concerns but also provided the local community with a new opportunity through the circular usage of resources. 

The development of biochar has created jobs and resulted in growth in industries, such as agriculture and manufacturing. This leads to the return of the labor force to rural areas, which helps concerns such as population outflow and economic struggle in agriculture-based communities. Furthermore, local businesses such as Guantain Black Gold can use the innovation to collaborate with other companies and NGOs for further achievement, as the company has collaborated with the Guantian District Office and Kun Shan University to provide more opportunities for next-generation and other local businesses. This directly helps Guantian Black Gold company and other local businesses have another opportunity for development since those local businesses are also facing the problem of the water caltrop industry downfall and they need to make changes.