Regional Inspection

Regional Inspection is a unique technology in Age of Empires IV: The Sultans Ascend, available to Zhu Xi's Legacy, that can be researched at the Mount Lu Academy starting in the Castle Age. It improves the supervision bonus of Imperial Officials from 150% to 300%.

v • d • e Technologies in Age of Empires IV
Economic technologies
Wood	Forestry · Double Broadax · Lumber Preservation · Crosscut Saw
Food	Horticulture · Fertilization · Precision Cross-Breeding
Gold/Stone	Specialized Pick · Shaft Mining · Cupellation
Hunting	Professional Scouts · Survival Techniques
Fishing	Extended Lines · Drift Nets
Villager	Wheelbarrow · Textiles
Relic	Tithe Barns
Military technologies
Melee damage	Bloomery · Decarbonization · Damascus Steel
Ranged damage	Steeled Arrow · Balanced Projectiles · Platecutter Point
Melee armor	Fitted Leatherwork · Insulated Helm · Master Smiths
Ranged armor	Iron Undermesh · Wedge Rivets · Angled Surfaces
Ship (General)	Armored Hull · Shipwrights
Archer ship	Extra Hammocks · Heated Shot
Incendiary ship	Incendiaries · Explosives
Springald ship	Springald Crews · Swivel Cannon · Mounted Guns
Siege (General)	Siege Engineering · Greased Axles · Siege Works
Siege (Specific)	Geometry · Adjustable Crossbars · Roller Shutter Triggers · Lightweight Beams
Miscellaneous	Spyglass · Biology · Elite Army Tactics · Incendiary Arrows · Chemistry · Serpentine Powder · Silk Bowstrings
Religious units	Piety · Herbal Medicine
Building-specific technologies
Emplacements	Arrowslits · Naval Arrowslits · Springald Emplacement · Cannon Emplacement · Fortify Outpost
Miscellaneous	Boiling Oil · Court Architects · Military Academy
Unique technologies
Abbasid Dynasty	Composite Bows · Camel Rider Barding · Camel Handling · Camel Support · Camel Rider Shields · Medical Centers · Improved Processing · Agriculture · Boot Camp · Teak Masts · Proselytization · Preservation of Knowledge · Public Libraries · Phalanx · Armored Caravans · Grand Bazaar · Spice Roads · Fresh Foodstuffs · Fertile Crescent
Ayyubids	Phalanx · Teak Masts · Infantry Support · Siege Carpentry · Sultan's Mamluks · House of Wisdom technologies ( Advancement · Logistics · Growth · Industry · Master Smiths · Reinforment · Advisors · Bazaar)
Byzantines	Heavy Dromon · Liquid Explosives · Expilatores · Trapezites · Numeri · Greek Fire Projectiles · Mercenary contracts ( Eastern · Western · Silk Road) · Veteran Contract · Elite Contract · Teardrop Shields · Ferocious Speed · Border Settlements · Mangonel Emplacement
Chinese	Reload Drills · Ancient Techniques · Pyrotechnics · Imperial Examinations · Additional Barrels · Battle Hardened · Extra Materials · Handcannon Slits · Thunderclap Bombs
Delhi Sultanate	Armored Beasts · Howdahs · Mahouts · Paiks · Forced March · Village Fortresses · Honed Blades · Tranquil Venue · Reinforced Foundations · All-Seeing Eye · Efficient Production · Sanctity · Swiftness · Zeal · Hearty Rations · Slow-Burning Defenses · Salvaged Materials
English	Network of Citadels · Enclosures · Arrow Volley · Armor Clad · Admiralty · Shattering Projectiles
French	Crossbow Stirrups · Gambesons · Royal Bloodlines · Enlistment Incentives · Long Guns · Cantled Saddles · Chivalry · Merchant Guilds
Holy Roman Empire	Slate and Stone Construction · Reinforced Defenses · Devoutness · Heavy Maces · Two-Handed Weapons · Fire Stations · Inspired Warriors · Awl Pikes · Steel Barding
Japanese	Tawara · Takezaiku · Fudasashi · Copper Plating · Tatara · Hizukuri · Kobuse-gitae · Yaki-ire · Odachi · Nagae Yari · Do-maru Armor · Kabura-ya Whistling Arrow · Daimyo Manor · Daimyo Palace · Shogunate Castle · Zen · Nehan · Five Mountain Ministries · Shinto Rituals · Gion Festival · Bunrei
Jeanne d'Arc	Crossbow Stirrups · Gambesons · Royal Bloodlines · Long Guns · Cantled Saddles · Chivalry · Companion Equipment · Ordinance Company · Merchant Guilds
Malians	Banco Repairs · Farima Leadership · Imported Armor · Local Knowledge · Poisoned Arrows · Precision Training · Javelin Emplacement · Canoe Tactics
Mongols	Improved technologies · Whistling Arrows · Yam Network · Piracy · Superior Mobility · Monastic Shrines · Additional Torches · Raid Bounty · Stone Bounty · Siha Bow Limbs · Stone Commerce · Steppe Lancers · Pax Mongolica
Order of the Dragon	Slate and Stone Construction · Reinforced Defenses · Fire Stations · Inspired Warriors · War Horses · Heavy Torches · Golden Cuirass · Scale Armor · Zornhau · Bodkin Bolts
Ottomans	Field Work · Mehter Drums · Anatolian Hills · Military Campus · Timariots · Extensive Fortifications · Advanced Academy · Janissary Company · Pax Ottomana · Siege Crews · Great Bombard · Trade Bags · Janissary Guns · Great Bombard Emplacement · Imperial Fleet
Rus	Fine Tuned Guns · Boyar's Fortitude · Mounted Training · Knight Poleaxes · Siege Crew Training · Wandering Town · Divine Light · Fervor · Saint's Veneration · Banded Arms · Castle Watch · Castle Turret · Adaptable Hulls
Zhu Xi's Legacy	Regional Inspection · Single Whip Reform · Imperial Red Seals · Advanced Administration · Military Affairs Bureau · Thunderclap Bombs · Handcannon Slits · Cloud of Terror · Dali Horses · Roar of the Dragon · Bolt Magazines · Hard Cased Bombs · 10000 Bolts · Dynastic Protectors
Removed technologies
Season Two Update	Shipwrights
Season Three Update	Additional Sails · Navigator Lookout · Extra Ballista · Chaser Cannons · Patchwork Repairs · Clinker Construction · Cedar Hulls
Season Four Update	Improved Blessing · Saint's Reach
Season Five Update	Reusable Barrels · Benediction · Setup Camp · Double Time
Season Seven Update	Marching Drills
Season Eight Update	Manuscript Trade · Lookout Towers
Season Nine Update	Riveted Chain Mail · Fast Training