Quest for hacthling transformed to strider (level 55).
I dont understand what exactly i have to do with the for trees.
Please answer me.

You mean the one with trees ha? Yes it is a bit hard. All you must do is to go to the 4 trees(Wind, Star, Twilight and Abyss) in the Hunter's Valley(you can learn their locatios from various sites) and kill the soul of tree guardians (easy mobs). Then have your hatchling to attcak the tree but the tree shouldn't be killed so heal the tree and have your hatchling attack it until a fairy leaf disappear from your quest inventory. However, when the hatchling will be attacking the tree the soul of tree guardians will respawn and attack the hatchling so kill them again. And 1 more important thing that don't get close to tree with your char or you will be effected by a poison and dont kill the tree because when it is killer 20 souls will appear and attack you and your hatchling. I hope the information will be useful to you.

Location of the trees:

Fairy Tree Of Abyss
http://lineage.pmfun.com/loc/27188/fairy-tree-of-abyss.html

Fairy Tree Of Star
http://lineage.pmfun.com/loc/27186/fairy-tree-of-star.html

Fairy Tree Of Twilight
http://lineage.pmfun.com/loc/27187/fairy-tree-of-twilight.html

Fairy Tree Of Wind
http://lineage.pmfun.com/loc/27185/fairy-tree-of-wind.html

Where To find S grade armor recipe....not jewelry

you must make a quest alliance with varka silenos or ketra orcs , btw look this link
http://lineage.pmfun.com/list/quest-mor ... as-silenos
http://lineage.pmfun.com/list/quest-mor ... ketra-orcs

The hatchling to strider quest...
I used my prophet. It was lvl 52 at that moment and really perfect.
I equipped her with BW light and sov with acumen
But if done right it doesn't matter.

First I rooted the tree guardians.
Then I let the hatchling hit the tree (without the use of beastshots coz I didn't want to kill the tree)
I kept rooting the guardians and healing myself while they were rooted.

If the tree was nearly dead and the leave still had not disappeared, I paused the attack.
I recalled my hatchling, Killed the guardians and took some distance.
After the tree healed a bit a restarted the same process.

GL and HF

And it will take about 10 minutes per tree.
My advice: Take some blessed scrolls of ressurection for the hatchling just in case you need it.