In today’s world of highly advanced technologies, human beings have planted their footprints across the North and South Poles and have conquered the highest peaks. The deep sea remains the only space with tremendous unknowns that are yet to be explored. Oceans are of strategic significance to nations. Against this backdrop, China’s “Jiaolong” submersible embarked on its deep-dive journey and made historic breakthroughs that glorify China. The author travelled with the ship for field investigation for over 50 days and conducted interviews for nearly four years. He panoramically and faithfully recollects the details of the ins and outs of “Jiaolong’s” deep dives.