Chinese Alphabeta or Letters
There is no such thing as Chinese alphabeta or Chinese letters in Chinese. Chinese characters are known as logograms. Each character has both its meaning and pronunciation. The closest thing to alphabeta might be the Chinese radicals, but they are just the basic building blocks for Chinese characters.
The Chinese pinyin is the standard spelling system for Chinese (Mandarin) in China. It represents the sound part of Chinese and is used to learn Chinese characters so it is not Chinese alphabeta, unless there is a day in the future that Chinese characters are totally replaced by the Chinese pinyin. However, it is impossible that Chinese characters are going away in the foreseeable future.