What do you mean by seven stars in a row?

It means auspicious omen. The ancients also called seven-star renju a five-star convergence, which means that the five planets of the solar system converge in a straight line in Jin Mu. In ancient times, there was also the meaning of the arrival of great men. For example, in Historical Records, it is mentioned that Zhou Wenwang was ordered by Gobang after 1-2 years. Generally speaking, the appearance of seven-star renju is auspicious.