Is there an alphabetic system in the Chinese language?
The official way to write Chinese uses Chinese characters, which is not an alphabetical system.
There have been various phonetic systems developed to either write or transcribe Chinese. Some of these systems are alphabets. To emphasise, these phonetic systems are not official ways of writing Chinese.
The official way of writing, using characters, does not use word spacing. When using a phonetic script, word spacing is commonly adopted; see Spacing Guidelines for Modern Chinese Writing.


Example phonetic systems:

Writing Chinese


Pe̍h-ōe-jī, a Roman alphabet for Minnan;
Dungan Cyrillic, a Cyrillic alphabet for a the Dungan language, a dialect of Central Plains Mandarin;
Xiao'erjing, a Perso-Arabic-based abugida for Mandarin.


Transcribing Chinese


Hanyu Pinyin, a Roman alphabet for Mandarin;
Yale Romanisation for Cantonese;
Bopomofo, a semi-syllabary for Mandarin.