I want to ask some geographical questions.

1) First of all, although I majored in geography in high school, I didn't know that South Africa also raised sheep. I am so embarrassed. Or I have forgotten ... but I guess it should be the same as Australia, it should be winter and summer.

2) Australia grows winter wheat. Spring wheat is planted in colder places, such as the northeast of China. Winter in Australia is not too cold, winter wheat is ok, and winter can be spent. Leisure time of sheep industry is busy farming time of wheat (sowing in May and June, harvesting in 1 1,1February). Probably shearing sheep is a busy period of sheep industry (this is what I guessed after watching a video of grazing in New Zealand, hee hee).

3) The large slope of the cold front only proves that the cold front is relatively strong, which is not necessarily related to rainfall. If the warm air mass in front of it contains less water, there are no condensation nuclei, and the cold front is dry, no matter how strong the cold front is, it is useless.

On the cold front, you can search Baidu Encyclopedia, which is quite detailed.

4) Cold front.