A wick of rush grass illuminates a millennial covenant. During the Eastern Han dynasty, Yin Zhen, a youth from the southern borderlands dissatisfied with barren lands, traveled north to Luoyang to study. Passing through Chi Village, he met A Ying, an herb-gathering maiden. A piece of rush grass served as a lamp wick, lighting up his desk and also lighting up two hearts. Hand in hand, they swore oaths before the stone, leaving letters in the grotto of affection; red strings tied around their wrists, never forsaking each other in this lifetime. Six years later, A Ying traveled thousands of miles to Luoyang, and Master Xu made an exception to accept her as a female disciple. Husband and wife studied together in the same classroom, reading classics, returning home after completing their studies, pioneering a land of literary education and guiding the villagers. They practiced with their entire lives: holding hands is love, guarding is duty.