Lao-Tse and Identification of His Works

Lao-Tse is the founder of ontology in Chinese ancient philosophy.Dao is the highest-level category in his ontology.He makes the immortalized achievement with a breakthrough in Chinese ancient philosophy.However,the series of questions-which dynasty,Lao-Tse,the forefather of Taoism,belongs to? When is Lao-Tse composed?Are Laolai Zi,Taishi Dan and Lao Dan the same person?-has obsessed in the mind of people for a long time.Therefore the way of clarifying Lao-Tse and his pretenders,the original and the fake is definitely beneficial in helping us have a good master of Lao-Tse's doctrine and its dissemination.Meanwhile the characteristics of thought and culture of XianQin Dynasty,the track of evolution and the interaction between Taoism and the other schools of thought are supposed to be scrutinized on the basis of it.