The core idea
Treasury term premium changes as investors alter the compensation they require for uncertainty around future inflation, rates, supply and duration risk.
What is happening underneath
Central-bank balance sheets and demand from pensions, insurers and foreign reserve managers can also influence it.
How investors should read it
Because it is not directly observable, analysts infer term premium from models and market behavior.
The same market move can carry different information depending on which maturity, issuer and risk premium is changing. Read the question together with the underlying concepts rather than treating one price move as a universal signal.