I have that to tell, will freeze your blood with horror.

我有话要说， 会惊恐地冻结你的血液。

If you say that something makes your blood run cold or makes your blood freeze, you mean that it makes you feel very very frightened.

如果你说某事会使你的血液变冷或让你的血液冻结，你的意思是它让你感到非常非常害怕。