What this site is for
This is a patient decision guide, not a textbook. The neck lift, the chin operation and the anatomy of the lower face are explained properly on the Facial Aesthetic Surgery hub, on the Neck Lift site and on Dr. Mao's own site. Repeating that here would help nobody. What this site adds is the part a patient has to do alone: working out which tissue is actually responsible for the shape, recognising that several of the causes are not fat and are not treated by removing fat, understanding what each option honestly changes, and knowing when the jawline is a medical question rather than an aesthetic one.
Who writes it
The guides are written by the clinical content team of the Plastic Surgery & Aesthetics Medical Center at Chongqing West District Hospital and medically reviewed by Tongchun Mao, MD, Deputy Director and Head of Aesthetic Surgery, who performs this surgery here. Every page carries the reviewer's name and the date it was last reviewed. Nothing on this site is attributed to a clinician who has not read it.
What we deliberately do not publish
No prices, because a real figure depends on which tissue is being treated, whether more than one thing is addressed, the anaesthetic and the facility, and a number invented for a web page misleads more than it helps. No brand names for medicines or devices. No dosages. No claims that a particular result will be achieved, and no before-and-after images used as evidence, because the result in one face does not predict the result in yours.
The limits of a website
Nothing here can tell you whether the fullness under your jaw is fat, gland, bone or skin. That requires someone to look at your profile, feel what lies under the skin, watch you swallow, and check the bite — findings that take a few minutes in person and cannot be produced through a screen. Use this site to arrive at a consultation with better questions, and treat any answer you receive here as general information rather than advice about you.