Back after a six-year supply cutoff — what exactly is the "Tao Law"?

What is the "Tao Law"?

Huawei (华为) has proposed a new industry axiom it calls the "Tao Law" (韬定律). Faced with what it has been reported that was a six‑year supply cutoff after successive U.S. sanctions and, reportedly, Taiwan Semiconductor Manufacturing Company (TSMC, 台积电) stopped shipping chips, Huawei says it has been forced to re‑engineer semiconductor design from first principles. The Tao Law is less about squeezing more transistors onto a wafer and more about shrinking what Huawei calls the system "time constant" —韬τ— through full‑stack co‑design, logic‑folding and cross‑layer optimization from device to system.

How is it different from Moore's Law?

Moore's Law, coined by Intel co‑founder Gordon Moore in 1965, tracked exponential gains in transistor counts and raw device scaling. In contrast, Tao Law targets system‑level performance gains without relying solely on advanced lithography. Think of traditional nodes — 28nm to 5nm — as making the pen tip finer. Tao Law says redraw the picture: change the layout and signal paths so chips behave like much smaller nodes without the same extreme photolithography. Nvidia CEO Jensen Huang's "Huang's Law" — tracking GPU AI inference improvements — is another reminder that architectural and software innovation can outpace pure process scaling.

Why this matters now

Why the sudden interest? Because geopolitics rewrote supply chains. It has been reported that after U.S. export controls tightened, Huawei had to accelerate domestic alternatives and system innovations rather than depend on cutting‑edge foundries. The move has real market consequences: partners such as SMIC (中芯国际) have seen stock gains — SMIC rallied about 18.78% on related news — and Chinese firms are framing a new competitive grammar that is not measured purely in nanometers. But claims of an "equivalent 1.4nm" by 2031 are ambitious. It was Moore himself who warned that costs, physics and economics constrain indefinite scaling.

The road ahead

Can Tao Law be written into the next set of textbooks? That depends on whether the next six years of engineering — from device physics to chiplet integration and system software — can sustain the promised gains at scale and yield. For Western readers unfamiliar with China’s tech landscape: this is a strategic pivot born of sanctions, huge domestic investment and a broader push to change the rules of global chip competition. Reportedly promising? Yes. Proven at production scale? Not yet.