  This is a combination of the errata of seven papers published between 2008
and 2016 with Jiang-Tao Li (JTL) as the first author. All the problems are
caused by two mistakes in the original scripts written by JTL used to calculate
the physical parameters of the hot gas from X-ray spectral analysis with a
thermal plasma code. The mistakes will result in an overestimate of some
parameters, such as the electron number density and hot gas mass by a factor of
$\sqrt{10}\approx3.162$, and an overestimate of the thermal pressure by a
factor of $\approx2.725$. JTL apologizes to the community for the inconvenience
caused by these mistakes. We present an update on the text, numbers, figures,
and tables of all the seven papers affected by these mistakes. Other papers led
by JTL or co-authored papers are not affected.
