My Father Sun Wentai

When the time traveler traveled to Sun Quan and Sun Jian could hear the traveler's voice again, an interesting scene happened. Sun Quan: [I can invent ice. Midsummer ice is extremely valuable! Sun Jian stood up holding iced sour plum soup: "Son, is this what you said?" Sun Quan: [I can invent cement to ensure that your city defenses are strong. Sun Jian: "Son, after dad finishes the last bit of the puzzle, he will go home to comfort you!"