Li-yan is a curious and ambitious girl belonging to the Akha hill tribe in China. She dreams of pursuing an education and becoming the first person in her village to attend a university. Her progressive goals frequently clash with the strict, ancient traditions of her community. She possesses a strong will and an intrinsic talent for understanding the region's native tea.

A-ma is Li-yan's mother and a highly respected midwife in Spring Well Village. She serves as the strict but fair matriarch of the family, firmly upholding the ancient Akha customs. She is the sole keeper of a secret, ancestral tea grove, holding deep knowledge of traditional medicine and local botany.

Haley is a bright college student studying biology and earth sciences in California. Adopted from a Chinese orphanage as an infant, she grew up in a supportive environment but wrestles with survivor's guilt and an enduring curiosity about her biological roots.

A-ba is the traditional head of Li-yan's family. He earns a living by harvesting tea on Nannuo Mountain and adheres closely to Akha patriarchal norms. He initially opposes the idea of a girl receiving advanced schooling, preferring she learn domestic skills.

Jin Chang is a successful entrepreneur who drives a luxury car and manages a thriving recycling business. Despite his current wealth, he grew up enduring extreme poverty following his family's political exile. He is intelligent, modest, and highly supportive of the people he cares about.

Li-yan's older siblings. As male children in a traditional Akha family, they hold a respected position in the household hierarchy. They eventually use their local connections to supply tea to urban markets.

The wives of Li-yan's brothers. They conform strictly to the obedience expected of Akha women, spending their time doing household chores, preparing food, and serving as intermediaries for family gossip.

The spirit priest of Spring Well Village. As the second most important figure in the community, he acts as an intermediary between the physical world and the spirit realm, enforcing religious abstinence and interpreting taboos.

The village shaman who enters trances to resolve communal disputes and identify the root causes of misfortune. He works closely with the spirit priest to maintain the strict laws of the Akha tribe.

Ci-teh is Li-yan's peer and neighbor in Spring Well Village. She comes from a wealthy family and embraces the traditional Akha lifestyle. She demonstrates high intelligence in school but ultimately focuses on marriage and consolidating her family's land and influence.

Deh-ja and Ci-do are a married couple whose lives change drastically during a difficult labor. Their situation brings the severe reality of Akha Law to the forefront, demonstrating the strict rules the community enforces regarding family structures and spiritual purity.

Teacher Zhang is an intellectual sent from Beijing to Nannuo Mountain during China's Cultural Revolution. Deprived of his former university position and separated from his family, he harbors bitterness toward his situation but channels his energy into helping promising students secure advanced schooling.

San-pa is a young boy from a neighboring village who attends the same rural school as Li-yan. He is ambitious and desires a prosperous future away from the mountain's poverty. According to the Akha calendar, his birth date makes him culturally incompatible with Li-yan.

Mr. Huang is a tea connoisseur and businessman from Hong Kong. He visits the remote mountains searching for authentic, aged Pu'er tea. He introduces modern commerce to the Akha people, offering to pay significantly higher prices for their harvest if they follow his specific processing instructions.

Mr. Huang's son, who later adopts the Western name Sean. He grows up immersed in the urban tea trade and possesses extensive knowledge of the region's rare harvests, making him an ideal guide for curious researchers.

Constance is a biology professor and Dan is an arborist. They are dedicated American parents who invest heavily in their daughter's health, education, and musical training. They encourage her interest in her heritage while trying to manage their own insecurities about their family dynamic.

An expert instructor at the newly formed Pu'er Tea College. He prefers naturally aged teas and serves as a vital professional connection for students looking to enter the wholesale market in Guangzhou.

Mrs. Chang is a former high school English teacher who survived rural exile during the Cultural Revolution. She strikes up a daily conversation routine with a young businesswoman in the park, offering practical advice and a sympathetic ear regarding past hardships.

A young boy growing up in California who represents the blending of modern American life and traditional Akha heritage. He receives an upbringing that honors his family's distant rural roots while living in a modern urban environment.

Four teenagers who attend counseling together. They bond over shared frustrations regarding demanding parental expectations, racial stereotyping in their schools, and questions about their biological origins.

A pediatrician working in an intensive care unit. He treats newly arrived international adoptees and communicates their medical needs to other professionals.