As soon as Su Nianwei, a modern doctor of tea science, opened her eyes, she became the notorious female caravan leader "Su Sandao" on the dangerous Sichuan-Yunnan road in the late Qing Dynasty. Faced with the dumping of Indian black tea and the crisis of Yi and Han horse gangs fighting for salt tea, she took up the crumbling "Yunfeng Gang". There is no magic weapon, only a book full of "tea biogeography" and a notebook on improving "Southern Roadside Tea". She used the DNA of ancient tea trees as a shield, the secret technique of microbial fermentation as a spear, and even carved the sound of caravan bells into the "mules and horses ledger" to resolve the ice of trust. When the copper coins of the "Carbang Credit Mutual Cooperative" jingled in the Yi village, and the flag of the "Sichuan-Yunnan-Tibetan Tea Industry Alliance" was raised on the ancient road, what Su Nianwei wrote in the jingling of the bells was not only a business war legend that reversed life and death, but also a "double helix" epic that used the fragrance of tea and the rhyme of bells to reconcile the nation.
