Bab 1336: Leaving Heavenly Craftsmanship City

3 days later, Zhang Tie was sitting on the opposite of an old man with grey eyebrows and beard while drinking tea and talking about runes knowledge and universal laws with him in an elegant and tranquil courtyard of Heavenly Craftsmanship City...

"What's the definition of runes?" Zhang Tie asked.

"Runes are the shuji of good luck, bridge of two realms, immortal essence of six senses!" The old man replied.

"What do you mean by shuji? What's the bridge? What's the immortal essence?" Zhang Tie continued.