Can patients with oral ulcers drink white liquor (Chinese白酒)?
Patients with oral ulcers are generally not advised to drink white spirits (baijiu). If in doubt, it is recommended to consult a healthcare professional in advance. Detailed explanation is as follows:

During an oral ulcer episode, the oral mucosa is in an inflamed state and highly sensitive to irritants. The alcohol content in white spirits is strongly irritating and can further aggravate the damaged mucosa, thereby delaying the healing process and potentially increasing pain and discomfort.
In addition, alcohol, acting as a solvent, may dissolve harmful substances from the ulcerated area. These substances, if absorbed into the body through the ulcer site, could worsen the infection and exacerbate the condition of the oral ulcer. Therefore, to avoid aggravating symptoms, patients with oral ulcers should avoid consuming white spirits as much as possible.
Patients with oral ulcers should refrain from drinking white spirits to prevent worsening of the condition and delayed healing. In daily life, patients should maintain good oral hygiene, follow a light diet, avoid spicy and irritating foods, and ensure adequate rest and appropriate exercise to enhance immunity and promote ulcer healing.