Ez wins Crit Jing wei

Jing wei is a powerful hunter, but requires a little know how to really get the best value out of her kit. She thrives best with high attack speed and crit for dishing out major splash damage on targets with her 2. To start I highly recommend gilded arrow. Gilded arrow in combination with gust gives you insane early game attack speed that will catch enemies off guard and help clear wave. This will also be your important mp5 item to make sure you can stay in the fight. Work to clear the support and pen camp as fast as possible getting to wave and throw your gust on the first three minions. Make sure to try and finish the marked minion and jump on your gust for the double attack speed boost to clear the remaining minions before the enemy. If you successfully do this get your 2 and harrass the enemy with big damage to pressure them back. Then you can rotate to jungle camps. Continue this strategy for laning phase (first 10ish minutes).

This is where the real fun begins. At this point you should have shadow shrunken and be close to asi if you don't have it already. You should be rotating to other lanes for ganking and roaming for team fights and doing mid objectives like scorpions, gold fury, pyromancer, oracles harpies, and buffs. Don't worry too much about teir one towers at this point jn the game and focus on helping your team succeed in team fights and objectives.

By this point you should have most of the build. You should definitely have silverbranch bow and should be working towards lvl 20 as quick as possible for ornate arrow. Save your money for this unless you have enough for a maxed out deathbringer otherwise the mid teir items of deathbringer will set you back. Ornate arrow will help you get a big boost in crit attack speed and damage working with silverbrach. Then farming gold will be easy to get deathbringer. You should also have oracle chalice by this point as well as picking up sentinel wards when possible. Focus on sticking with your team for fights and going for objectives.

Gust: is your best tool. Make sure to take advantage of attack speed buff from gust. And make sure to box ememies around gust to keep them at a safe distance. Setting gust at choke points in the map can save you and your teammates life by knocking up enemies that try and follow. I meantioned some examples in the synergy section, but make sure to use gust to combo with your teammates cc's for kill settups.
Explosive bolts: Make sure to refresh explosive bolts before fights so you can have a fresh set of cooldown in fights for additional damage and easier auto hits. (Refreshing bolts in the fountian is a good habit).
Dash: Use Dash to get out of knock-ups, but but be care not to get cc'd out of it. Try and save her dash for avoiding those cc's, or for after the cc's are on cooldown.
Ult: Jing Wei's ult is best used for securing kills, chase, and escape. Her ult is very effective at dodging other dangerous ultimates, but does have some wind up. Make sure to cast the ability to preemptively dodge as to not get caught by the damage.