In the field of ecological and environmental protection in China's Xizang Autonomous Region, the "Zhang Huifang Innovation Team" is a highly respected name.

For many years, confronting the plateau's unique climate and geography, the team has made innovation its soul and craftsmanship its backbone. Working on the front line of ecological monitoring and research, they have devoted their efforts to safeguarding the plants, wildlife, rivers and mountains of the snowy plateau. From the rapids of the Yarlung Tsangpo River to the vast Changtang grasslands, from the glaciers at the foot of Mount Qomolangma to the forests of the eastern gorges, their footprints span every corner of this highland. With precise data and rigorous analysis, they provide solid support for protecting the "Third Pole of the Earth."

Faith: building foundations through perseverance

An outstanding team is inseparable from an exceptional navigator — and so it is with the Zhang Huifang Innovation Team. It is led by Zhang Huifang herself, a recipient of the State Council special allowance, an academic and technical leader of the autonomous region, a "first-class expert" in environmental monitoring, and a "Xizang Craftsman." Her career is a story of perseverance, starting from scratch and tackling daunting challenges.

In April 2000, Xizang received its first set of automatic air monitoring equipment. This should have been a golden opportunity to advance environmental protection, but the thick, English manuals and operating interface baffled everyone at the center: no one understood English. With just over a month left before the equipment was scheduled to go live on World Environment Day, the pressing task could not wait.

As the center's first technician with an undergraduate degree, Zhang Huifang shouldered the task. With unyielding determination, she worked day and night, translating technical terms word by word with a dictionary and delving into the principles of the equipment. In two weeks, she filled several notebooks and thoroughly grasped the core technology. During commissioning, she remotely consulted suppliers to solve problems while simultaneously getting her hands on the actual operation, often working late into the night. On June 5, 2000, Xizang's first daily ambient air quality report was successfully issued, achieving a breakthrough from zero in this field.

This also marked a major turning point in Zhang Huifang's career. Drawing on that experience, she took the lead in compiling Xizang's first operational management procedures for the automatic air quality monitoring system. She coordinated the layout of the monitoring network across the region, advancing the deployment of stations, equipment maintenance and upgrading, and laying the groundwork for the standardized development in the field.

Commitment: forging substance through dedication

Environmental monitoring is a systematic project. From field sampling and laboratory analysis to data review and reporting, the entire chain is governed by stringent standards that leave no room for error. Field sampling, as the first link in the chain, is demanding in its specifications, complex in procedure, tedious, and a profound test of patience.

Chen Xu, a former soldier, has remained true to his original aspiration for over two decades. His footprints have covered all 74 counties and districts and nearly eighty percent of its townships in Xizang. Pathless mountains are the roads he regularly walks; equipment weighing dozens of kilograms is his inseparable companion. After collecting samples, hiking for hours back to camp with heavy samples is routine for him. At an altitude of 5,300 meters in the source region of the Yangtze River, he and a colleague once got lost and groped their way through the uninhabited wilderness for hours. As they trudged back carrying their samples, the altitude sickness made every step feel like treading on cotton, yet the hand gripping the sample case never loosened.

Sample testing is no easier. Yang Xiaohong has worked in the testing lab for 12 years. The confined space of the laboratory is her most familiar battlefield. Every day, facing hundreds or even thousands of samples, she repeats the motions of preparing reagents, taking precise measurements, and recording data, often standing all day. Beyond the fatigue, there is monotony.

But for Yang Xiaohong, each dataset is not a cold number but a barometer of the plateau's ecological environment. To ensure data accuracy, she is almost strict with herself, running parallel tests on the same sample over and over again until the results are beyond doubt. "Let the real data speak, and be true to every sample and every value" — that is her unchanging professional creed.

Legacy: carrying the torch forward

"A single strand does not make a thread; nor a single tree a forest." The long-term development of Xizang's eco-environmental protection depends on a high-quality, localized scientific talents. The Zhang Huifang Innovation Team adheres to the philosophy of "strengthening the team through talent and passing the torch through generations," and has built a mentorship system that serves as a cradle for training personnel.

Sonam Drolkar, who joined the center in 2013, has rooted herself in the analysis laboratory for 13 years, growing from a newcomer into a senior mentor. She knows deeply that environmental monitoring is never a solitary endeavor. "No matter how strong one individual is, they cannot sustain the entire system. Only when everyone pulls together can every data set be precise and reliable," she says.

Last May, a colleague who was reassigned from the center to the team struggled with the sophisticated instruments and complex analysis procedures. Sona Drolkar took the initiative to guide him, starting from basic operations. From the details of sample pre-treatment—setting up equipment operation programs and interpreting monitoring methods — to operating the sophisticated gas chromatography-mass spectrometer, she taught him hands-on to fully understand the instrument's "temperament."

Today, the colleague can not only independently complete the analysis of organic compounds using the gas chromatography-mass spectrometer, but also join other team members in the analysis of organic pollutants for a research project, becoming a versatile talent within the team.

"Gathering every glimmer of light into a collective force is the only way to build a solid ecological shield." This statement has become the consensus of the entire team. They believe that the mentorship system passes on skills, fosters a sense of responsibility and aids growth. More importantly, it carries forward the mission of environmental protectors in the plateau to safeguard the lucid waters and lush mountains.

Reporter: Zhang Yu, Hao Yuting, Hu Wanrou

Translator: Dan Zhen, Liu Fang

Review: Hu Rongguo, Drakpa Wangchen