Mind & Drive
PSOS
A personal success operating system for turning daily reflection into measurable momentum, clearer goals, and AI-assisted insight.
01 Product builder · Marketing thinker · Applied mathematician
I build systems
that make progress
visible.
I'm Hongyu Cao — Gumayuchy. I combine product thinking, consumer insight, and AI to turn personal friction into useful tools.
Shanghai · New YorkAvailable worldwide
02 / Thesis
Better tools do more than track behavior.
They help people see themselves changing.
好的工具不只记录行为，更让人看见自己正在改变。
03 / Flagship ecosystem
Nexus
A personal optimization ecosystem connecting mind, action, and body — designed and built by Gumayuchy.
GumayuchyNexusMind + Body
Explore product
Body & Strength
Aithlete
An AI-assisted training companion that transforms movement videos into pose data, form feedback, and a more legible training history.
04 / Profile
Built between
disciplines.
My work sits at the intersection of human motivation and measurable systems. An applied mathematics foundation taught me to see structure; integrated marketing taught me to see people.
01Product strategy02AI prototyping03Consumer insight04Data storytelling
Education
New York University
MS, Integrated Marketing · GPA 3.8
Foundation
UC Santa Barbara
BS, Applied Mathematics
7years studying abroad
2products in Nexus
∞room to iterate
05 / Selected experience
From insight
to execution.
Founder & Product Lead
Nexus
Taking two AI products from problem definition and PRD through development, deployment, and user feedback — then unifying them into one platform.
Personal Credit Intern
Bank of Ningbo
Translated fragmented customer and business data into clearer operating reports while learning the full path from need discovery to delivery.
CRM Intern
OTYPE
Supported proposal development and CRM research for nine LVMH Beauty brands, connecting brand expression with customer operations.
06 / Contact
Have a problem
worth building for?
Nexus