大方廣佛華嚴經隨疏演義鈔 32.7

32.7

疏「非空非有是中道義」者，即第三結成中道。然其正意，合前真空二義總名非空，合前幻有二義皆名非有，空有不二故為中道。又以幻有為非空，以真空為非有，皆中道義。實則上空有之上有二中道，兼此為三，下融會中更當廣說。上來即第一門總名竟。

Regarding the Commentary's line, "Neither empty nor existent is the meaning of the middle way": this is the third [part], concluding the establishment of the middle way. However, its primary intention is that, combining the two previous meanings of true emptiness, they are collectively called "not empty"; and combining the two previous meanings of illusory existence, they are both called "not existent"; emptiness and existence being non-dual constitutes the middle way. Furthermore, taking illusory existence as "not empty" and true emptiness as "not existent" are both the meaning of the middle way. In reality, above the emptiness and existence mentioned above there are two middle ways; together with this one they make three, which will be expounded extensively in the harmonization below. The above completes the first gateway of general explanation.