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We consider the focusing inhomogeneous mass critical half-wave equation inone dimension. Under the mild conditions of the inhomogeneous factor, we showthat the existence of the radial blowup solutions with ground state mass$\|u_0\|_2=\|Q\|_2$, where $Q$ is the unique positive ground state solution ofequation $DQ+Q=Q^3$ and obtain the blowup rate$\|D^{\frac{1}{2}}u(t)\|_{L^2}\sim\frac{1}{|t|}$ as $t\nearrow 0^-$.

Blowup dynamics for inhomogeneous mass critical half-wave equation