Who is the old man with white beard who laughs in the Jianghu in Jin Yong's works?

It's Huang Shang. It's in the encyclopedia.

Huang Shang is a peerless martial arts wizard. He wrote Jiuyin Zhen Jing in Jin Yong's Legend of the Condor Heroes.

During the reign of Hui Zong, he searched all the Taoist books in the world and printed them by block printing. Wanshou Daocang (548 1 volume). The person who appointed the sculptor is Huang Shang, who is a civil servant. The emperor was afraid of the wrong words carved on this avenue and found that he was going to be sentenced to death, so he proofread it word by word very carefully. I didn't expect to master Daoism in the world after studying for a few years and realize the profound truth in martial arts. He taught himself without a teacher, learned internal skills and external skills, and became a master of martial arts. At this time, Manichaeism (post-Zoroastrianism) in Persia (now Iran) was introduced into Middle Earth. Hui Zong, because he only believed in Taoism, ordered Huang Shang to send troops to destroy Manichaeism. Unexpectedly, among Manichaeism believers, there are indeed many martial arts masters. When all believers are fighting, everyone is desperate, not as afraid of death as imperial officers and soldiers. After several battles, a group of officers and men suffered successive defeats. Huang Shang was angry, so he personally challenged the Manichaean master. At first, Huang Shang was eccentric because of his martial arts (because he created it himself), and no one had seen the other side. As a result, he killed several French kings and the messengers of Manichaeism on the spot. However, Huang Shang was seriously injured in the end, and he struggled to escape. Manichaeism was so popular that it killed Huang Shang's parents, wife and children.

After that, Huang Shang fled to a poor Jedi and hid. Keep all the martial arts tricks of dozens of opponents in mind and think hard about how to crack them. I don't know how long it took, but he finally cracked all the enemy's martial arts. Huang Shang was very happy at this time. He thought that even if these enemies came again, he could cope. So I came out of the mountain to get revenge. Unexpectedly, all my enemies died at this time, and Huang Shang thought,' I am old, but I won't live for a few years.' Later, he spent decades creating a martial art that included all the schools of kung fu in the world. A few years later, Huang Shang was infected with a plague that no one could escape, and he was about to die. He thought, this hard work must not be lost! So he passed on what he had learned all his life as the Nine Yin True Classics to later generations.