Visit Mount Huashan with 2 years old and 75 years

Hi
I am intending to visit Xian in March with my 2,5 years old daughter and my 75 years old parents
One of the activities is to visit Mount Hua
I understand we can take the cable car up to the top of the Mount, but once reached the top, what can we see in a short:easy walking distance for the cable car arrival?
Does it worth to go up with a 2 years old child and old person?
What is the temperature in March?