  The growth model of black hole is still a controversial topic. In the
stationary metric, all in-falling matter must be accumulated outside the event
horizon of the black hole, as clocked by a distant external observer. In the
time-dependent metric, all in-falling matter can fall into the event horizon of
the final black hole within very short time. We test these two growth models by
joining LIGO and Insight-HXMT observations. We find the stationary model is
inconsistent with LIGO and Insight-HXMT observations.
