"Come back, come back, oh wandering son who has roamed the ends of the earth." In the 1980s, the song "Clouds of Hometown" brought countless wandering sons' hearts back to their hometowns.

　　Recently, a reporter met Wang Zuo, an overseas Chinese from Canada, at a new energy green power plant in Horinger County, Hohhot City, Inner Mongolia Autonomous Region. The song was playing in his office, and Wang Zuo's story of a wandering son returning to his homeland began there.

　　Wang Zuo, a young man of Mongolian ethnicity, went abroad to study in 2003. Over two years, in Germany and New Zealand, he witnessed a circular industrial chain production model that combines modern agriculture with large-scale livestock farming.

　　"At that time, I saw that the manure and sewage from their livestock operations, after harmless anaerobic fermentation, was scientifically returned to the fields. I was deeply impressed," Wang Zuo said.

　　After returning to China in 2005, Wang Zuo saw that many places in his hometown were still in the traditional state of farming and livestock raising described as "one cow per family, wife and children on a warm kang." He then conceived the idea of building a "bridge" to bring advanced overseas agricultural and livestock production models, which integrate farming and raising with industrialization, back to China.

　　"The Chinese word for overseas Chinese, 'qiao,' has the person radical; this 'qiao' can also serve as 'qiao,' meaning bridge. Through me as a 'bridge,' industries and models from outside Inner Mongolia can be introduced into Inner Mongolia, making some contribution to Inner Mongolia's economic development." That is what he said, and in fact that is what Wang Zuo did.

　　In 2012, Wang Zuo went to Canada again to study environmental engineering. After completing his studies and returning, Wang Zuo established a new energy ecological enterprise in Horinger County centered on a green circular industrial chain for the resource utilization of livestock and poultry manure. The biogas slurry and biogas residue produced serve as organic fertilizer to meet local agricultural production needs.

　　"Because I am a son of the Chinese nation and also from Inner Mongolia, I thought 'Huameng' was the perfect name for my company." While showing the reporter around the plant, Wang Zuo explained that the CSTR anaerobic reactor originally used was built by a German manufacturer but did not run well. After several years of debugging with his employees and adapting to local needs, he upgraded the system from German technology to localized technology, creating an efficient, environmentally friendly, and reliable system for resource utilization of livestock and poultry manure.

　　Inside the plant, the reporter did not smell any drifting odor of manure in the air. In the cowshed, dairy cows were leisurely grazing, and the manure produced by the cows and the organic waste from the pasture were all transported to the anaerobic reactor for fermentation.

　　It is understood that a lactating cow weighing 1,200 kilograms excretes 60 to 70 kilograms of urine and manure per day. After the manure is fermented in the anaerobic reactor, part of the biogas slurry can be returned to the fields as organic fertilizer, while another part of the biogas residue can serve as a "mattress" for the cows, giving them a more comfortable living environment.

　　Wang Honghua, chairman of the Federation of Returned Overseas Chinese of the Inner Mongolia Autonomous Region, told the reporter that recently the National Development and Reform Commission of the People's Republic of China, together with six ministries and commissions, issued the "Notice on Several Policy Measures to Support the Green, Low-Carbon, and High-Quality Development of Inner Mongolia," supporting Inner Mongolia in vigorously developing new quality productive forces characterized by green and low-carbon features. For overseas Chinese entrepreneurs like Wang Zuo who focus on green production capacity, this undoubtedly opens up broader horizons.

　　"As the 'family' of overseas Chinese, we also hope to build more 'bridges' like Wang Zuo, with two-way engagement, to empower the high-quality development of the Inner Mongolia Autonomous Region," Wang Honghua said.

　　"My roots are in China, my soul is in Inner Mongolia, and what I will do in the future is also in Inner Mongolia," Wang Zuo told the reporter. "My dream is to make Inner Mongolia's agriculture and livestock farming better."