Lin Zhiyao, a graduate student in the Department of Modern History, studied ancestral manuscripts and silver pocket watches late at night in order to solve the century-old unsolved case of the "mysterious disappearance" of Marshal Ling Yuanzhou of the Republic of China. However, he accidentally triggered a time travel and fell into the war-torn suburbs of Shanghai in 1932.
When they first met, she was wearing pajamas and rabbit slippers, and was regarded as a Japanese spy in the smoke. It was he who rescued the enemy with a gun, and his cold eyes hid scrutiny; during the relationship, she used modern historical knowledge to predict the battle situation, crack the secret agent code, and help him avoid the arsenal crisis. He taught her to ride a horse and use a gun, protected her, and left her a warm compressed biscuit in the trench.
Every time the blue light of her pocket watch flashed, her stay in the Republic of China became more dangerous, and her modern body became more fragile, but she was reluctant to leave - that young marshal who fought decisively on the battlefield would silently hand over his cloak to her when she was afraid of the sound of cannons, his eyes would light up when she said "everyone is equal in the future", and he would search like crazy when she disappeared.
When the Battle of Songhu broke out, and historical data recorded that he would die on the battlefield, she clenched her pocket watch and resolutely traveled for the last time: "Ling Yuanzhou, I will protect you this time."
During the gunfire, he put his mother's jade pendant around her neck: "If you can survive, I will protect you and my country; if not, let this jade pendant protect you for me until the future."
Little did she know, that pocket watch that spanned time and space had already engraved their destiny on the inside of the case - from modern times to the Republic of China, from historical data to reality, his name had always been her obsession spanning a hundred years.
