Patients with early-stage liver cancer generally do not experience metastasis. This is because for patients with early-stage liver cancer, the lesions are localized and have not spread, thus being classified as early-stage. Moreover, the general treatment for patients with early-stage liver cancer involves curative surgery. Since the lesions are localized, in most cases, there will be no recurrence or metastasis after the surgery. Therefore, for early-stage patients, there is no need to administer adjuvant radiotherapy or adjuvant chemotherapy and other anti-tumor treatments after the surgery. However, once the liver cancer lesions invade surrounding tissues and metastasize to distant sites, it indicates that the lesions have spread, and the clinical stage has progressed to mid or late stages, losing the opportunity for curative surgery. Most patients undergo comprehensive treatments such as radiotherapy, chemotherapy, and targeted therapy which generally results in a reduction in survival time.