路子很野or很广 literally meaning "many ways", similarly, it just means he is mighty man, if he got trouble, he has many friends who would help him... 道上混的人its a social language in chinese, in my dialect, these people are called 流氓,like a group, can fight against other groups or others, ignoring law, very "friendly" to their buddies, "if you dare to hurt my friend, i will kill you". everywhere i guess?