[Xiaomi Mi 9 Themes, Apps, and Mods] Laptapper:
It's unmodified from syberia rom:

# begin common build properties

# autogenerated by build/make/tools/buildinfo_common.sh

ro.system.build.date=Sun Jun 7 11:29:24 CST 2020

ro.system.build.date.utc=1591500564

ro.system.build.fingerprint=Xiaomi/syberia_cepheus/cepheus:10/QQ3A.200605.002.A1/7a92f0004e:user/release-keys

ro.system.build.id=QQ3A.200605.002.A1

ro.system.build.tags=release-keys

ro.system.build.type=user

ro.system.build.version.incremental=7a92f0004e

ro.system.build.version.release=10

ro.system.build.version.sdk=29

ro.product.system.brand=Xiaomi

ro.product.system.device=cepheus

ro.product.system.manufacturer=Xiaomi

ro.product.system.model=MI 9

ro.product.system.name=cepheus

# end common build properties

# begin build properties

# autogenerated by buildinfo.sh

ro.build.id=QQ3A.200605.002.A1

ro.build.display.id=QQ3A.200605.002.A1 release-keys

ro.build.version.incremental=7a92f0004e

ro.build.version.sdk=29

ro.build.version.preview_sdk=0

ro.build.version.preview_sdk_fingerprint=REL

ro.build.version.codename=REL

ro.build.version.all_codenames=REL

ro.build.version.release=10

ro.build.version.security_patch=2020-06-05

ro.build.version.base_os=

ro.build.version.min_supported_target_sdk=23

ro.build.date=Sun Jun 7 11:29:24 CST 2020

ro.build.date.utc=1591500564

ro.build.type=user

ro.build.user=evasi0n

ro.build.host=evasi0n-Ubuntu

ro.build.tags=release-keys

ro.build.flavor=syberia_cepheus-user

ro.build.system_root_image=true

ro.product.model=MI 9

ro.product.brand=Xiaomi

ro.product.name=cepheus

ro.product.device=cepheus

# ro.product.cpu.abi and ro.product.cpu.abi2 are obsolete,

# use ro.product.cpu.abilist instead.

ro.product.cpu.abi=arm64-v8a

ro.product.cpu.abilist=arm64-v8a,armeabi-v7a,armeabi

ro.product.cpu.abilist32=armeabi-v7a,armeabi

ro.product.cpu.abilist64=arm64-v8a

ro.product.manufacturer=Xiaomi

ro.product.locale=en-US

ro.wifi.channels=

# ro.build.product is obsolete; use ro.product.device

ro.build.product=cepheus

# Do not try to parse description, fingerprint, or thumbprint

ro.build.description=syberia_cepheus-user 10 QQ3A.200605.002.A1 7a92f0004e release-keys

ro.build.fingerprint=Xiaomi/syberia_cepheus/cepheus:10/QQ3A.200605.002.A1/7a92f0004e:user/release-keys

ro.syberia.device=cepheus

# end build properties

#

# from device/xiaomi/cepheus/system.prop

#

# Bluetooth

persist.bt.enableAptXHD=true

persist.service.btui.use_aptx=1

# Camera

persist.camera.sat.fallback.dist.d=10

persist.camera.sat.fallback.dist=40

persist.camera.sat.fallback.lux.d=50

persist.camera.sat.fallback.luxindex=360

persist.vendor.camera.enableNCSService=TRUE

persist.vendor.camera.enableTOFInterface=TRUE

persist.vendor.camera.mfnrframenum=8

persist.vendor.camera.multicam=TRUE

vendor.camera.aux.packagelist=org.codeaurora.snapcam,com.android.camera,org.lineageos.snap

ro.miui.notch=1

# CNE and DPM

persist.vendor.cne.feature=1

persist.vendor.dpm.feature=1

persist.vendor.dpm.loglevel=0

persist.vendor.dpm.nsrm.bkg.evt=3955

# Display

ro.sf.lcd_density=440

# Graphics

ro.surface_flinger.has_wide_color_display=true

ro.surface_flinger.has_HDR_display=true

# Set lmkd options

ro.config.low_ram = false

ro.lmk.kill_heaviest_task = true

ro.lmk.kill_timeout_ms = 100

ro.lmk.use_minfree_levels = true

ro.lmk.log_stats = true

# Media

media.aac_51_output_enabled=true

media.stagefright.enable-aac=true

media.stagefright.enable-fma2dp=true

media.stagefright.enable-http=true

media.stagefright.enable-player=true

media.stagefright.enable-qcp=true

media.stagefright.enable-scan=true

media.stagefright.thumbnail.prefer_hw_codecs=true

mmp.enable.3g2=true

media.settings.xml=/vendor/etc/media_profiles_vendor.xml

persist.mm.enable.prefetch=true

# Netflix custom property

ro.netflix.bsp_rev=Q855-16947-1

# NFC DT

ro.nfc.port=I2C

# RCS

persist.rcs.supported=1

# RIL

DEVICE_PROVISIONED=1

persist.vendor.radio.enable_temp_dds=true

persist.vendor.radio.force_on_dc=true

ril.subscription.types=RUIM

ro.telephony.default_cdma_sub=0

ro.telephony.default_network=22,22

telephony.lteOnCdmaDevice=1

# SurfaceFlinger

ro.surface_flinger.max_frame_buffer_acquired_buffers=3

ro.surface_flinger.vsync_event_phase_offset_ns=2000000

ro.surface_flinger.vsync_sf_event_phase_offset_ns=6000000

# WiFi

wifi.interface=wlan0

# end of device/xiaomi/cepheus/system.prop

#

# ADDITIONAL_BUILD_PROPERTIES

#

ro.treble.enabled=true

net.bt.name=Android