Police are appealing for public assistance to help locate missing man Junzhong.
The 75-year-old was last seen in Wheelers Hill about midday when he went out for a walk.
He is described as having a thin build with grey/white hair and was wearing a black tracksuit with white stripes.
Police and family have concerns for his welfare as he does not speak English and the length of time he has been missing.
Police have released an image of Junzhong in the hope someone recognises him and can provide information on his current whereabouts.
Anyone who sees Junzhong is urged to call Glen Waverley Police Station on 9566 1555.