  PDS 70 is so far the only young disc where multiple planets have been
detected by direct imaging. The disc has a large cavity when seen at sub-mm and
NIR wavelengths, which hosts two massive planets. This makes PDS 70 the ideal
target to study the physical conditions in a strongly depleted inner disc
shaped by two giant planets, and in particular to test whether disc winds can
play a significant role in its evolution. Using X-Shooter and HARPS spectra, we
detected for the first time the wind-tracing [O I] 6300AA line, and confirm the
low-moderate value of mass-accretion rate in the literature. The [O I] line
luminosity is high with respect to the accretion luminosity when compared to a
large sample of discs with cavities in nearby star-forming regions. The FWHM
and blue-shifted peak of the [O I] line suggest an emission in a region very
close to the star, favouring a magnetically driven wind as the origin. We also
detect wind emission and high variability in the He I 10830AA line, which is
unusual for low-accretors. We discuss that, although the cavity of PDS 70 was
clearly carved out by the giant planets, the substantial inner disc wind could
also have had a significant contribution to clearing the inner-disc.
