Lan-Zhen is not a popular first name. It is more often used as a unisex (male and female) name.
First names and their meaning - Page 11321
Lanzon
Lanzon is not a popular first name.
Laocadia
Laocadia is not a popular first name. It is more often used as a girl (female) name.
Laocoon
Origin: Basque. 
Laocoon is not a popular first name. It is more often used as a boy (male) name. 
Laocoonte
Origin: Basque. 
Laocoonte is not a popular first name. It is more often used as a boy (male) name. 
Laografias
Laografias is not a popular first name. It is more often used as a boy (male) name.
Laoiseach
Laoiseach is not a popular first name. It is more often used as a boy (male) name.
Laokoon
Origin: Basque. 
Laokoon is not a popular first name. It is more often used as a boy (male) name. 
Laokoonte
Origin: Basque. 
Laokoonte is not a popular first name. It is more often used as a boy (male) name. 
Laomedon
Origin: Basque. 
Laomedon is not a popular first name. It is more often used as a boy (male) name.