The fourteenth year of the Zhengtong reign, on the eve of the Tumu Crisis.
Shen Huaiyuan, a garrison soldier at Juyong Pass, had guarded the pass for forty-two years. He died atop its walls. With his dying breath, he pressed into his grandson Shen Nanshan's hands a hand-drawn border defense map he had hidden for twenty years.
Seventeen-year-old Shen Nanshan had no idea that the cinnabar marks on the map concealed the entire geography of the northern defenses around the capital, painstakingly surveyed over half a lifetime by one man, including every route the Oirat cavalry could use to infiltrate.
He also had no idea that after a brick from the city wall came crashing down on his forehead, a pair of "eyes" would appear in his mind. Every stretch of land he had ever crossed would be etched into his memory in three dimensions, perfectly clear and precise down to the smallest detail.
From the ruins of Juyong Pass to the examination halls of Jinling, from the oil lamps of the Hanlin Academy to the command banners of the governor of Xuan-Da, from the muddy mountain roads of Guizhou's Miao lands to the smoke of war at the foot of the Yin Mountains, he changed his fate against all odds with his knowledge of geography. He rose from an orphan of lowly military household status to Grand Secretary of the Ming cabinet.
But along the way, he personally saw his mentor off, watched helplessly as loyal officials died unjustly, chose silence on the night of the Coup at the Gate, and learned to relinquish power amid suspicions that his achievements overshadowed the throne.
He spent his life doing two things: making sure there were no more "uninhabited regions" on the map of the realm, and ensuring the people at the frontier no longer feared hearing enemy hooves at daybreak.
He accomplished both.
"The passes and mountains remain, but the boy is gone. Yet the land remembers that someone once risked his life for it."
