大方廣佛華嚴經隨疏演義鈔 32.11

32.11

疏「空非空無二為一真空」者，則空上二義自合，然取空上不壞性義、非空上離空相義，故合為一真空，為真諦中道。前一為即相無相之中道，此一為即性無性之中道，亦存泯無二義。

Regarding the commentary's "Emptiness and non-emptiness being non-dual constitute one true emptiness": the two meanings on emptiness combine on their own; however, taking the meaning of not destroying nature on emptiness and the meaning of transcending the characteristic of emptiness on non-emptiness, they combine into one true emptiness, which is the Middle Way of ultimate truth. The former is the Middle Way of being identical with characteristics yet devoid of characteristics; this one is the Middle Way of being identical with nature yet devoid of nature; it is also the meaning of preservation and annihilation being non-dual.