Step 1: SUCCESS! With the key '客' you have just found 2 Chinese characters! They are . TOO MUCH? Click another black key from your Chinese character -- OR 'S' to get the current result: 客
S

Tap the next key above! Or explorer the Chinese characters that have been just found (long Chinese words with the characters -- or click their pinyin):
 

KE4
customer, visitor, guest

E2
volume, amount, quantity, forehead, quota