Consider the following statements, with reference to the Harshavardhan:

1. He was the founder of the Pushyabhuti Dynasty or the Vardhana Dynasty during the 7th century A.D.

2. Hsuan Tsang Chinese traveller visited India during the Harshavardhana period.

3. After his accession, Harshavardhana united his kingdom and shifted his capital to Kanauj.

How many of the above statements are correct?