However, in order for Fang Ling to synthesize 200-year-old ginseng, he only needs eight 30-year-old ginseng plants, and the gap between the cost and the selling price is huge.

However, it is not so easy to complete the three fusions, compared to the secondary fusion, the amount of heaven and earth qi required for the three fusions is larger, and the whole process must be completed at one time to ensure that the qi of heaven and earth is melted into the medicinal materials without volatilization.

At the same time, synthesizing medicinal materials with the technique of melting the sun and the moon is the same as releasing the qi of heaven and earth in the inch, once the qi of heaven and earth in the body is exported, it is consumed.

After Fang Ling fused twice and three times, the qi of heaven and earth consumed was very large, as if he had fought a big battle with the enemy, and each ginseng plant that was more than two hundred years old almost absorbed the amount of Fang Ling's cultivation in half a day.

However, even so, such a fast-growing 200-year-old ginseng is completely inferior to the real 200-year-old ginseng in terms of medicinal efficacy.

The reason for this is that although Fang Ling has mastered the technique of three fusions, the refined Heaven and Earth Qi in his body has not yet reached the concentration of Heaven and Earth Qi contained in two hundred years of ginseng, so the medicinal effect of these two two-hundred-year-old ginseng is only a little higher than that of a hundred years of ginseng.

Of course, Fang Ling can also directly use two 50-year-old ginseng to synthesize 100-year-old ginseng, however, he can't synthesize eight 50-year-old ginseng plants continuously, because the longer the medicinal herbs, the greater the consumption of heaven and earth qi, and if there is a mistake in the fusion process, the heaven and earth qi on the medicinal materials will quickly volatilize, thus wasting in vain.

The next night, Fang Ling put two two-hundred-year-old ginseng into a mahogany box he bought, and took Shen Huantian to the black market together, while Dong Canghai and Lu Bei and others acted together to continue to collect all kinds of intelligence.

Blackwood City was built on the basis of a deserted town, Yuan Ba, as a general on the border of Cai State, was also very good at building fortifications, so he transformed the town into an underground city, and built a rough stone city on top of the underground city, which can be easily accessed through various entrances in the stone city.

At this time, the lanterns were high, the dungeon was lit with torches, and the moonlight was shining down from the patio, illuminating the bottom very brightly.

The dungeon is like a bustling night market in a big city, with streets crisscrossing each street with a dozen shops, each selling a variety of things, whether it is cloth and silk, food specialties, weapons and equipment, everything is dazzling, and the price is so low that it makes people drool.

Of course, buyers buying these things are also talking about bulk transactions, and if they want to buy, they will buy box by box, and they can't afford to do such a business without a certain amount of money.

Fang Ling walked all the way and found that there were hundreds of large and small shops, and the daily transaction tax of each one was frighteningly high.

It didn't take long for the two of them to come to the outside of the shop, which was built in the center of the dungeon, built very atmospherically, and there were two tall stone lions at the door, with fierce eyes and fierce looks.