Also referred to as Zhou Hongbai in one instance, the only legitimate son of the Duke of Zhou's family and a noble Young Duke. He is in charge of military affairs and has made great achievements at a young age. He was previously betrothed to Cao Lingyun but had formally broken off the engagement in the past life, returning doubled betrothal gifts. Frustrated on her behalf, he volunteered for a border post to conquer the Bailiangda tribe. In this lifetime, he is visibly devastated upon hearing of the incident at Luoying Courtyard, with his palms raw and bleeding from clenched fists. He secretly donates one thousand taels to fund Cao Lingyun's school without wanting her to know it came from him. He has lingering feelings for Cao Lingyun.