Do tea leaves have pesticide residues? Should you discard the first infusion?

Pesticides are now found everywhere on agricultural products, and even tea leaves contain pesticides. Some people discard the first infusion when brewing tea, pouring it away and not drinking it. Is this correct?
How can you reduce the chance of ingesting pesticides when drinking tea? Lin Mu-lian, director of the Tea Research and Extension Station of the Council of Agriculture, suggests discarding the first infusion, or simply choosing certified organic tea, so you need not worry about ingesting pesticide residues and can still fully take in catechins to strengthen the body's antioxidant or anti-cancer capacity.

         How long should the first infusion be brewed before it is discarded? Lin Mu-lian says it is best to wait until the tea leaves unfurl, then pour the infusion away. He says that after tea leaves are picked and go through withering, fermentation, roasting, and rolling to become the finished product, residual pesticides are greatly reduced; usually strip-shaped tea leaves unfurl quickly after steeping, while ball-shaped tea leaves unfurl more slowly, but as long as the tea leaves have unfurled, pouring away the first infusion means the amount of residual pesticide ingested is negligible.

        Lin Mu-lian says this method also has a drawback, because the first infusion releases the most catechins; discarding the first infusion can reduce the amount of residual pesticide ingested, but it also loses the most nutrients released by the tea leaves.

        Lin Mu-lian suggests that to drink tea with peace of mind and nutrition, you can choose organic tea guided by the government and certified; not only is no pesticide or chemical fertilizer applied during cultivation, but the production method also conforms to ecological and environmental protection.
So when drinking tea, there are also many things we need to pay attention to. You should pay more attention.