Unsung heroes inspire our respect

It's just past noon and 40-year-old Zhao Hongwei is getting ready to climb a 40-meter power tower to carry out routine maintenance work, shortly after finishing a seven-kilometer patrol on foot 2,600 meters above sea level.

Spring in Southwest China's Yunnan province can be hot and the temperature has already climbed to 32 C.

Even for someone who is fit, the plateau's weather can be unbearable, resulting in dizziness, nausea and difficulty breathing.