The debate in Washington this week ran on blockade math. The Washington Post's September 18 analysis walked through what breaking a Chinese blockade of Taiwan would cost, military, diplomatic, economic. It is the wrong model for what China is actually building. The Diplomat reported September 19 that Beijing is pushing patrols into new waters near Taiwan and regularizing its presence there, deploying research vessels equipped for military reconnaissance. A blockade is an event, ordered on a date, reversible by negotiation or force. Presence is not an event. It does not require an order from Xi Jinping, and it does not end when a summit concludes.

Regularized patrols and dual-use survey ships create a baseline Taiwan's navy has to track every day, not a crisis it scrambles to meet once. Taiwan's own count this week showed 28 Chinese warplanes and nine ships in a single day, the kind of number that stops making headlines exactly when it becomes normal. That is the function of the tactic: a coercion posture absorbed into routine reads, over time, as sovereignty already exercised. If the pattern holds through the Trump-Xi summit on September 24, Taipei will be arguing for arms sales against a baseline Beijing has already reset, not a blockade it can point to and say has not happened yet.