At that time, when people in China saw the western phonetic symbols, they all called them "crab-line characters", which meant that the characters walked sideways like crabs.
However, with the progress of society, the writing, typesetting and printing of Chinese characters in China soon adopted horizontal writing.
Because it has many conveniences:
First, our eyes are long horizontally, so we can read without looking up and down.
Second, when reading articles and books, you hold down the pages with your hands and arms. When reading from left to right, don't raise your arm.
Third, ink written horizontally, or ink or ballpoint pen oil, or even pencil words, cannot evaporate immediately. At this time, if you write vertically, the handwriting will inevitably fall off. Writing horizontally can avoid erasing your handwriting.
Fourth, by the way, although calligraphy works are art. But there is no need to write vertically. The times are advancing! And many people began to write big four-character banners from left to right! This is also walking with the times.