* unable to take tablets orally or suspected hypersensitivity to jaktinib, drugs of the same class, or their excipients, patients with severe gastrointestinal dysfunction affecting drug absorption; * any person meeting criteria for critical pneumonia; * patients considered unsuitable for this trial by the investigator.

* unable to take tablets orally or suspected hypersensitivity to jaktinib, drugs of the same class, or their excipients, patients with severe gastrointestinal dysfunction affecting drug absorption; * any person meeting criteria for critical pneumonia; * patients considered unsuitable for this trial by the investigator.

unable to take tablets orally or suspected hypersensitivity to jaktinib, drugs of the same class, or their excipients, patients with severe gastrointestinal dysfunction affecting drug absorption; any person meeting criteria for critical pneumonia; patients considered unsuitable for this trial by the investigator.

unable to take tablets orally or suspected hypersensitivity to jaktinib, drugs of the same class, or their excipients, patients with severe gastrointestinal dysfunction affecting drug absorption; any person meeting criteria for critical pneumonia; patients considered unsuitable for this trial by the investigator.