Question

read the source of the allusion.
in his novel lost horizon, james hilton describes the fictional paradise of shangri - la, which is located in the mountains of tibet.
what is the meaning of the allusion in the sentence below?
for me, yosemite in the summer is shangri - la.
a place that is difficult to reach
an ideal place

Explanation:

The source text says Shangri - La is a fictional paradise. In the sentence "For me, Yosemite in the summer is Shangri - La", since Shangri - La is a paradise (an ideal place), it implies Yosemite in summer is like an ideal place. The fact that it is in the mountains (as in the source) doesn't directly relate to the allusion's meaning here; the key is the "paradise" (ideal place) aspect.

Answer:

an ideal place