Lessing-Othmer is a romanisation of Mandarin Chinese

Chinese language

The Chinese language is a language or language family consisting of varieties which are mutually intelligible to varying degrees. Originally the indigenous languages spoken by the Han Chinese in China, it forms one of the branches of Sino-Tibetan family of languages...

 that was once used by Germans written by F. Lessing and Dr. W. Othmer, who in 1912 printed their book "Lehrgang der nordchinesischen Umgangssprache" (Course in the North Chinese Colloquial Language) in Qingdao

Qingdao

' also known in the West by its postal map spelling Tsingtao, is a major city with a population of over 8.715 million in eastern Shandong province, Eastern China. Its built up area, made of 7 urban districts plus Jimo city, is home to about 4,346,000 inhabitants in 2010.It borders Yantai to the...

  whilst it was a German colony in 1912 through the "Deutsch-Chinesische Druckerei und Verlagsanstalt."

In 1979, the State Council of the People's Republic of China for Romanization ruled that translations of foreign-language publications should use Lessing romanization in German-speaking countries, and pinyin

Pinyin

Pinyin is the official system to transcribe Chinese characters into the Roman alphabet in China, Malaysia, Singapore and Taiwan. It is also often used to teach Mandarin Chinese and spell Chinese names in foreign publications and used as an input method to enter Chinese characters into...

 in English-speaking countries.

Lessing-Othmer	Hanyu Pinyin	Wade-Giles Wade-Giles Wade–Giles , sometimes abbreviated Wade, is a romanization system for the Mandarin Chinese language. It developed from a system produced by Thomas Wade during the mid-19th century , and was given completed form with Herbert Giles' Chinese–English dictionary of 1892.Wade–Giles was the most...	IPA
w	w	w	u
dsch	zh	ch	ʈʂ
dj	j	ch	tɕ
tsch	ch	ch'	ʈʂʰ
tj	q	ch'	tɕʰ
j	r	j	ʐ
y	y	y	i
hs	x	hs	ɕ
sch	sh	sh	ʂ
ds	z	ts	ts
ts	c	ts'	tsʰ
b	b	p	p
p	p	p'	pʰ
g	g	k	k
k	k	k'	kʰ
d	d	t	t
t	t	t'	tʰ