01LIVE
GlobalCitiAlign · International visitor services
Compare Xi’an and Shanghai across five visitor-service dimensions with city maps, transparent indicators, traceable evidence and visible unknowns.
ENGINEERING SYSTEMS · AI TOOLS · RESEARCH
Turning complex problems into working systems.
I'm Qihang Sun, a semiconductor ATE application engineer. This is a map of the original work I have built across FPGA, GIS, financial research, and local AI tooling—and how those projects connect.
29original projects
4connected systems
6interactive demos
01 / SYSTEM MAP
Four directions. One engineering method.
Every project is framed by its problem, boundaries, evidence, and reproducibility.
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Financial research systems
Data cleaning, candidate discovery, and valuation audits with a deliberate boundary between models and human judgment.
AI & automation systems
Task inboxes, remote execution, model routing, and context recovery for real personal workflows.
Knowledge & learning systems
Books, courses, audio, and personal understanding organized into verifiable learning loops.
GIS & hardware engineering
From FPGA data links to geospatial analysis, emphasizing measurable and reproducible engineering.
02 / LIVE SHOWCASE
Representative projects you can use
Select a project title to enter the experience. Online demos use public sources, sanitized samples or client-side simulation; each project explains its evidence and boundaries.
02LIVE
Xi'an livability & terrain GIS
An interactive screening map separating modern livability metrics from historical terrain context.
03LIVE
A-share financial analysis agent
A pipeline spanning ingestion, screening, FCF valuation, and evidence-backed reporting.
04LIVE
Mobile remote AI agent
A recoverable asynchronous task channel between phone and desktop.
05Archived
Qiaokeli Dictate
A Chinese-first local dictation tool for KDE: one-hotkey recording, live preview, final correction, and paste-back into the focused field.
06LIVE
English listening lab
A learning tool for audio, text, timelines, and synchronized subtitles.
03 / ABOUT
Connecting chips, data, and engineering reality.
My path began with Verilog RTL and FPGA systems, then expanded into semiconductor ATE, Python data tools, and local AI infrastructure. I care not only about making systems work, but about making them testable, transferable, and maintainable.
Application Engineer · ACCO Test