Martian storms are more dangerous for electronics than for humans, because wind speeds there are much lower than during hurricanes on Earth, and human could simply walk through the storm (sufficient internal heating of the suit provided); but on Mars, these sometimes envelop the entire globe, blocking sunlight. Such was the main reason of Opportunity's eventual demise. Zhurong, too, appears to have frozen in a dark and stormy night, as, according to Zhang Rongqiao, chief designer of China’s Mars exploration program, dust deposited on its solar panels.