Which is more powerful, wordless gobbledygook or nuwa stone?

At the beginning, the Buddha took a fancy to Jiang Ziya's diligence and sincerity, secretly taught him magic tricks every night, and finally taught him a wordless gobbledygook, but told him not to let Shen know about learning magic and not to give Nuwa Stone to others.

When Jiang Ziya was practicing dharma at night, he was surprised to see a monster outside the house, so he followed him into the jungle and bumped into Shen. After a simple fight, Shen began to doubt Jiang Ziya. One day, Shen showed his magic to Jiang Ziya, only to find that his head was taken away by the Hydra, and Jiang Ziya chased him to the Poisonous Dragon Pool. In order to save Shen, he used his magic, and Nu Wa Shi also helped him.

It turns out that all this was designed by Shen to test Jiang Ziya's magic. In order to pacify his younger brother's inner grievances, Jiang Ziya promised to give Nuwa Stone to Shen. Hu Xianer found that Shen was the man wearing Nuwa Stone, and mistakenly thought that he was the immortal that Nuwa said. Shen took the opportunity to instruct the three demons to deal with Jiang Ziya.